MFS Lifetime 2030 Fund (Prospectus Summary) | MFS Lifetime 2030 Fund

Summary of Key Information

Investment Objective

The fund's investment objective is to seek a high level of total return
consistent with its asset allocation until the approximate retirement
year in the fund's name; thereafter, the fund will seek total return
through a combination of current income and capital appreciation.
The asset allocation of the fund will change over time.

Fees and Expenses

This table describes the fees and expenses that you may pay when you buy and
hold shares of the fund.

The annual fund operating expenses are based on expenses reported during the
fund's most recently completed fiscal year and a weighted average of the total
annual operating expenses (as reported in each underlying fund's most recent
shareholder report) of, and the fee charged by (if any), the underlying funds in
which the fund invested during the fund's most recently completed fiscal year,
expressed as a percentage of the fund's average net assets during the period.
They have been adjusted to reflect certain current fee arrangements.

You may qualify for sales charge reductions if you and certain members of your
family invest, or agree to invest in the future, at least $50,000 in MFS Funds.
More information about these and other waivers and reductions is available from
your financial intermediary and in "Sales Charges and Waivers or Reductions" on
page 11 of the fund's prospectus and "Waivers of Sales Charges" on page 29 of
the fund's statement of additional information Part I.

Shareholder Fees (fees paid directly from your investment):

Shareholder Fees MFS Lifetime 2030 Fund	A		B	C	I	R1	R2	R3	R4
Shareholder Fees, Column Name	A		B	C	I	ALL R	ALL R	ALL R	ALL R
Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	5.75%		none	none	none	none	none	none	none
Maximum Deferred Sales Charge (Load) (as a percentage of original purchase price or redemption proceeds, whichever is less)	1.00%	[1]	4.00%	1.00%	none	none	none	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):

Annual Fund Operating Expenses MFS Lifetime 2030 Fund		A	B	C	I	R1	R2	R3	R4
Operating Expenses, Column Name		A	B	C	I	R1	R2	R3	R4
Management Fee		none	none	none	none	none	none	none	none
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	1.00%	none	1.00%	0.50%	0.25%	none
Other Expenses		0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%	0.25%
Acquired (Underlying) Fund Fees and Expenses		0.90%	0.90%	0.90%	0.90%	0.90%	0.90%	0.90%	0.90%
Total Annual Fund Operating Expenses		1.40%	2.15%	2.15%	1.15%	2.15%	1.65%	1.40%	1.15%
Fee Reductions and/or Expense Reimbursements	[1]	(0.25%)	(0.25%)	(0.25%)	(0.25%)	(0.25%)	(0.25%)	(0.25%)	(0.25%)
Total Annual Fund Operating Expenses After Fee Reductions and/or Expense Reimbursements		1.15%	1.90%	1.90%	0.90%	1.90%	1.40%	1.15%	0.90%

Example

This example is intended to help you compare the cost of investing in the fund
with the cost of investing in other mutual funds.

The example assumes that: you invest $10,000 in the fund for the time periods
indicated and you redeem your shares at the end of the time periods (unless
otherwise indicated); your investment has a 5% return each year; and the fund's
operating expenses remain the same.

Although your actual costs will likely be higher or lower, under these assumptions your costs would be:

Expense Example MFS Lifetime 2030 Fund (USD $)	Expense Example, By Year, Column Name	Expense Example, With Redemption, 1 Year	Expense Example, With Redemption, 3 Years	Expense Example, With Redemption, 5 Years	Expense Example, With Redemption, 10 Years
A	Class A Shares	685	969	1,274	2,138
B	Class B Shares assuming redemption at end of period	593	949	1,331	2,272
C	Class C Shares assuming redemption at end of period	293	649	1,131	2,463
I	Class I Shares	92	341	609	1,375
R1	Class R1 Shares	193	649	1,131	2,463
R2	Class R2 Shares	143	496	873	1,934
R3	Class R3 Shares	117	419	742	1,658
R4	Class R4 Shares	92	341	609	1,375

Expense Example, No Redemption MFS Lifetime 2030 Fund (USD $)	Expense Example, No Redemption, By Year, Column Name	Expense Example, No Redemption, 1 Year	Expense Example, No Redemption, 3 Years	Expense Example, No Redemption, 5 Years	Expense Example, No Redemption, 10 Years
B	Class B Shares assuming no redemption at end of period	193	649	1,131	2,272
C	Class C Shares assuming no redemption at end of period	193	649	1,131	2,463

Portfolio Turnover

The fund pays transaction costs, such as commissions, when it buys and sells
securities (or "turns over" its portfolio). A higher portfolio turnover rate
may indicate higher transaction costs and may result in higher taxes when
shares are held in a taxable account. These transaction costs, which are not
reflected in "Annual Fund Operating Expenses" or in the "Example," affect
the fund's performance.  During the most recent fiscal year, the fund's
portfolio turnover rate was 15% of the average value of its portfolio.

Principal Investment Strategies

The fund is designed to provide diversification among different asset classes by
investing the majority of its assets in other MFS mutual funds, referred to as
underlying funds. The underlying funds are selected following a two-stage asset
allocation process. The first stage is a strategic asset allocation to establish
the percentage of the fund's assets to be invested in the general asset classes
of Bond Funds, International Stock Funds, and U.S. Stock Funds, as well as an
allocation to underlying funds that have less traditional investment strategies
that MFS (Massachusetts Financial Services Company, the fund's investment
adviser) believes provide diversification benefits when added to a portfolio
consisting of stock and bond funds (referred to as Specialty Funds). The second
stage involves the actual selection of underlying funds to represent the asset
classes based on underlying fund classifications, historical risk, performance,
and other factors. Within the stock fund allocations, MFS seeks to diversify
globally (by including domestic and international underlying funds), in terms of
market capitalization (by including large, mid, and small capitalization
underlying funds) and by style (by including both growth and value underlying
funds). Within the bond fund allocation, MFS includes underlying funds with
varying degrees of interest rate and credit exposure.

As of August 28, 2011, the fund's target allocation among asset classes and the
underlying funds was:

Bond Funds:                            14%
MFS Emerging Markets Debt Fund          2%
MFS Global Bond Fund                    2%
MFS High Income Fund                    3%
MFS Inflation-Adjusted Bond Fund        4%
MFS Research Bond Fund                  3%
Specialty Funds:                        9%
MFS Absolute Return Fund                1%
MFS Commodity Strategy Fund             4%
MFS Global Real Estate Fund             4%
International Stock Funds:             23%
MFS Emerging Markets Equity Fund        1%
MFS International Growth Fund           6%
MFS International New Discovery Fund    3%
MFS International Value Fund            6%
MFS Research International Fund         7%
U.S. Stock Funds:                      54%
MFS Growth Fund                        11%
MFS Mid Cap Growth Fund                 9%
MFS Mid Cap Value Fund                  9%
MFS New Discovery Fund                  2%
MFS New Discovery Value Fund            2%
MFS Research Fund                       8%
MFS Value Fund                         11%

*The target asset class and underlying fund allocations presented in the table
are rounded.

The asset class allocations, as well as the underlying funds and their target
weightings, are based on an allocation strategy designed for investors with the
approximate retirement year in the fund's name. Investors should also consider
their age, personal circumstances, risk tolerance, and overall investment
strategy and allocation. The asset allocation strategy will become increasingly
conservative over time.

Upon reaching its stated target year, the fund's allocation strategy will be
aligned with the allocation strategy of the MFS Lifetime Retirement Income
Fund.  It is expected that the fund will be combined with the MFS Lifetime
Retirement Income Fund within five years of the date that its asset allocation
strategy matches the asset allocation strategy of the MFS Lifetime Retirement
Income Fund.  The chart below illustrates how the asset allocation strategy of
the fund will change over time.

                                    ASSET CLASS WEIGHTS FOR TARGET DATE FUNDS

71%Bond Funds
4% Specialty Funds
5% International Stock Funds
20% U.S. Stock Funds


U.S. Stock Funds		         Years Before Target Date                         Target Date       Years After Target Date
                      45       40      35     30     25     20    15     10     5             0		            5	    10
Asset class weight %  57%      57%     57%    57%    57%   54.5%  52%    41%   28%           20%	           20%      20%


International Stock Funds            Years Before Target Date                              Target Date       Years After Target Date

                      45       40      35     30     25     20    15    10     5              0		           5	    10
Asset class weight %  28%      28%     28%    28%    28%    24%  20%   13%     8%             5% 	           5%       5%


Specialty Funds                      Years Before Target Date                              Target Date       Years After Target Date
                      45       40      35     30     25     20    15    10     5              0		           5	    10
Asset class weight%   10%      10%     10%    10%    10%     9%    8%    6%    4%              4%                  4%       4%


Bond Funds                           Years Before Target Date                              Target Date       Years After Target Date
                      45       40      35     30     25     20    15    10     5              0		           5	    10
Asset class weight%    5%       5%      5%     5%     5%   12.5%  20%   40%   60%            71%                 71%       71%



Investments for the underlying funds are selected primarily based on fundamental
analysis of issuers. Quantitative analysis may also be considered.

Principal Risks

As with any mutual fund, the fund may not achieve its objective and/or you could
lose money on your investment in the fund, including near or after the target
date.  There is no guarantee that the fund will provide income at or through
retirement. An investment in the fund is not a bank deposit and is not insured
or guaranteed by the Federal Deposit Insurance Corporation or any other
governmental agency.

The principal risks of investing in the fund are:

Stock Market/Company Risk:  Stock markets are volatile and can decline
significantly in response to issuer, market, economic, industry, political,
regulatory, geopolitical, and other conditions, as well as to investor
perceptions of these conditions. The price of an equity security can decrease
significantly in response to these conditions, and these conditions can affect a
single issuer or type of security, issuers within a broad market sector,
industry or geographic region, or the market in general.

Foreign and Emerging Markets Risk:  Exposure to foreign markets, especially
emerging markets, through issuers or currencies can involve additional risks
relating to market, economic, political, regulatory, geopolitical, or other
conditions. These factors can make foreign investments, especially those in
emerging markets, more volatile and less liquid than U.S. investments. In
addition, foreign markets can react differently to these conditions than the
U.S. market. Emerging markets can have less developed markets and less
developed legal, regulatory, and accounting systems, and greater political,
social, and economic instability than developed markets.

Currency Risk:  The value of foreign currencies relative to the U.S. dollar
fluctuates in response to market, economic, political, regulatory, geopolitical
or other conditions, and a decline in the value of a foreign currency versus the
U.S. dollar reduces the value in U.S. dollars of investments denominated in that
foreign currency.

Interest Rate Risk:  The price of a debt instrument falls when interest rates
rise and rises when interest rates fall. Instruments with longer maturities, or
that do not pay current interest, are more sensitive to interest rate changes.

Credit Risk:  The price of a debt instrument depends, in part, on the credit
quality of the issuer, borrower, counterparty, or underlying collateral and can
decline in response to changes in the financial condition of the issuer,
borrower, counterparty, or underlying collateral, or changes in specific or
general market, economic, industry, political, regulatory, geopolitical, or
other conditions.

Lower quality debt instruments (commonly referred to as "high yield securities"
or "junk bonds") can involve a substantially greater risk of default or can
already be in default, and their values can decline significantly. Lower quality
debt instruments are regarded as having predominantly speculative
characteristics. Lower quality debt instruments tend to be more sensitive to
adverse news about the issuer, or the market or economy in general, than higher
quality debt instruments.

Prepayment/Extension Risk:  Instruments subject to prepayment and/or extension
can reduce the potential for gain for the instrument's holders if the instrument
is prepaid and increase the potential for loss if the maturity of the instrument
is extended.

Inflation-Adjusting Risk:  Interest payments on inflation-adjusted debt
instruments can be unpredictable and vary based on the level of inflation. If
inflation is negative, principal and income can both decline.

Municipal Risk:  The price of a municipal instrument can be volatile and
significantly affected by adverse tax or court rulings, legislative or political
changes, changes in specific or general market and economic conditions, and the
financial condition of municipal issuers and insurers. Because many municipal
instruments are issued to finance similar projects, conditions in these
industries can significantly affect the fund and the overall municipal market.

Commodity Risk:  The value of commodities may be more volatile than the value of
equity securities or debt instruments and their value may be affected by changes
in overall market movements, commodity index volatility, changes in interest
rates, or factors affecting a particular industry or commodity. The price of a
commodity may be affected by demand/supply imbalances in the market for the
commodity.

Real Estate-Related Investment Risk:  The risks of investing in real
estate-related securities include certain risks associated with the direct
ownership of real estate and the real estate industry in general. These include
risks related to general, regional and local economic conditions; fluctuations
in interest rates; property tax rates, zoning laws, environmental regulations
and other governmental action; cash flow dependency; increased operating
expenses; lack of availability of mortgage funds; losses due to natural
disasters; changes in property values and rental rates; and other factors.
The securities of smaller real estate-related issuers can be more volatile, less
liquid, and have more limited financial resources than securities of larger
issuers.

Derivatives Risk:  Derivatives can be highly volatile and involve risks in
addition to the risks of the underlying indicator(s) on which the derivative is
based. Gains or losses from derivatives can be substantially greater than the
derivatives' original cost.  Derivatives can involve leverage.

Investment Selection and Allocation Risk:  MFS' analysis of an investment and
its assessment of the mix of general risk and return characteristics of asset
classes and underlying funds can be incorrect and can lead to an investment
focus that results in the fund underperforming other funds with similar
investment strategies and/or funds that invest in similar asset classes.

Counterparty and Third Party Risk:  Transactions involving a counterparty or
third party other than the issuer of the instrument are subject to the credit
risk of the counterparty or third party, and to the counterparty's or third
party's ability to perform in accordance with the terms of the transaction.

Liquidity Risk:  It may not be possible to sell certain investments, types of
investments, and/or segments of the market at any particular time or at an
acceptable price.

Performance Information

The bar chart and performance table below are intended to provide some
indication of the risks of investing in the fund by showing changes in the
fund's performance over time and how the fund's performance over time
compares with that of a broad measure of market performance and one or more
other measures of performance for markets in which the fund may invest.

The fund's past performance (before and after taxes) does not necessarily
indicate how the fund will perform in the future. Updated performance is
available online at mfs.com or by calling 1-800-225-2606.

The bar chart does not take into account any sales charges (loads)
that  you may be required to pay upon purchase or redemption of the
fund's shares. If these sales charges were included, they would reduce
the returns shown.

Class A Bar Chart.

The total return for the six-month period ended June 30, 2011 was 5.31%. During
the period(s) shown in the bar chart, the highest quarterly return was 18.01%
(for the calendar quarter ended June 30, 2009) and the lowest quarterly return
was (23.14)% (for the calendar quarter ended December 31, 2008).

Performance Table.

Average Annual Total Returns (for the Periods Ended December 31, 2010)

Average Annual Total Returns MFS Lifetime 2030 Fund	Average Annual Returns, Label		Average Annual Returns, 1 Year	Average Annual Returns, 5 Years	Average Annual Returns, Since Inception	Average Annual Returns, Inception Date
A	A Shares Returns Before Taxes		10.58%	2.20%	2.85%	Sep. 29, 2005
B	B Shares Returns Before Taxes		12.48%	2.34%	3.13%	Sep. 29, 2005
C	C Shares Returns Before Taxes		15.46%	2.69%	3.30%	Sep. 29, 2005
I	I Shares Returns Before Taxes		17.74%	3.73%	4.35%	Sep. 29, 2005
R1	R1 Shares Returns Before Taxes		16.56%	2.67%	3.26%	Sep. 29, 2005
R2	R2 Shares Returns Before Taxes		17.08%	3.15%	3.75%	Sep. 29, 2005
R3	R3 Shares Returns Before Taxes		17.35%	3.40%	4.00%	Sep. 29, 2005
R4	R4 Shares Returns Before Taxes		17.64%	3.69%	4.28%	Sep. 29, 2005
After Taxes on Distributions A	A Shares Returns After Taxes on Distributions		10.17%	1.60%	2.18%	Sep. 29, 2005
After Taxes on Distributions and Sales A	A Shares Returns After Taxes on Distributions and Sale of Fund Shares		7.05%	1.66%	2.18%	Sep. 29, 2005
Standard & Poor's 500 Stock Index	Index Comparisons (Reflects no deduction for fees, expenses or taxes) Standard & Poor's 500 Stock Index		15.06%	2.29%	2.76%	Sep. 29, 2005
MFS Lifetime 2030 Fund Blended Index	Index Comparisons (Reflects no deduction for fees, expenses or taxes) MFS Lifetime 2030 Fund Blended Index	[1]	13.19%	2.78%	3.29%	Sep. 29, 2005

After-tax returns are calculated using the historical highest individual federal
marginal income tax rates and do not reflect the impact of state and local
taxes. Your actual after-tax returns will depend on your own tax situation, and
may differ from those shown. The after-tax returns shown are not relevant to
investors who hold their shares through tax-deferred arrangements, such as
401(k) plans or individual retirement accounts. The after-tax returns are shown
for only one of the fund's classes of shares, and after-tax returns for the
fund's other classes of shares will vary from the returns shown.

[1] On shares purchased without an initial sales charge and redeemed within 24 months of purchase.

[1] MFS agreed in writing to bear the fund's expenses, excluding management fees, distribution and service fees, interest, taxes, extraordinary expenses, brokerage and transaction costs and investment-related expenses and including fees and expenses associated with investments in investment companies and other similar investment vehicles, such that "Other Expenses" do not exceed 0.00% of the fund's average daily net assets annually for each class of shares. This agreement will continue until at least August 31, 2012, after which MFS may increase such expense limitation to 0.10% of the fund's average daily net assets annually for each class of shares without a vote of the fund's Board of Trustees. Any increase above 0.10% would require a vote of the fund's Board of Trustees.

[1] The MFS Lifetime 2030 Fund Blended Index composed at period end of the following amounts of the following indices: Barclays Capital U.S. Aggregate Bond Index (13%); Standard & Poor's 500 Stock Index (55%); MSCI EAFE (Europe, Australasia, Far East) Index (24%); Dow Jones-UBS Commodity Index (4%); and FTSE EPRA/NAREIT Developed Real Estate Index (4%).