Filed by Comcast Corporation Pursuant
                                       to Rule 425 under the Securities Act of
                                       1933 and deemed filed pursuant to Rule
                                       14a-12 under the Securities Exchange
                                       Act of 1934

                                       Subject Company: AT&T Comcast Corporation
                                       Commission File No. 333-82460

                                       Date: June 17, 2002


     The following letter was mailed to Comcast shareholders:



                              COMCAST CORPORATION
                               1500 Market Street
                     Philadelphia, Pennsylvania 19102-2148


June 17, 2002


Dear Fellow Shareholder:

We have previously sent to you proxy material for the Special Meeting to be
held on July 10, 2002, at which Comcast shareholders will consider the proposed
combination with AT&T's broadband business. Your Board of Directors has
unanimously recommended that shareholders vote FOR all items on the agenda.

Approval of Proposal 3, the "preferred structure" proposal, requires a majority
of the votes cast by holders of Class A shares voting as a single class, in
addition to a majority of votes cast by holders of Class A and Class B shares
voting together as a single class. Therefore, your vote is important, no matter
how many or how few shares you may own. Whether or not you have already done
so, please vote today--by telephone, via the Internet, or by signing, dating
and returning the enclosed proxy card in the envelope provided.

Very truly yours,

/s/ Brian L. Roberts

Brian L. Roberts
President
Comcast Corporation





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                                 IMPORTANT NOTE:
      Remember, you can vote your shares by telephone, or via the Internet.
        Simply follow the easy instructions on the enclosed proxy card.

          If you have any questions, or need assistance in voting your
                  shares, please call our proxy solicitor,

                           INNISFREE M&A INCORPORATED
                          TOLL-FREE, at 1-877-750-9499.
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   Note: The following notice is included to meet certain legal requirements:


                           FORWARD-LOOKING STATEMENTS

     The enclosed information contains forward-looking statements within the
meaning of the "safe harbor" provisions of the United States Private Securities
Litigation Reform Act of 1995. Investors are cautioned that such
forward-looking statements with respect to revenues, earnings, performance,
strategies, prospects and other aspects of the businesses of AT&T Corp.
("AT&T"), Comcast Corporation ("Comcast") and, after the completion of the
proposed transaction between AT&T and Comcast, AT&T Comcast Corporation ("AT&T
Comcast") are based on current expectations that are subject to risks and
uncertainties. A number of factors could cause actual results or outcomes to
differ materially from those indicated by such forward-looking statements.
These factors include, but are not limited to, risks and uncertainties set
forth in AT&T's, Comcast's and AT&T Comcast's filings with the Securities and
Exchange Commission ("SEC"), including risks and uncertainties relating to:
failure to obtain and retain expected synergies from the proposed transaction,
delays in obtaining, or adverse conditions contained in, any required
regulatory approvals, changes in laws or regulations, availability and cost of
capital and other similar factors. Readers are referred to AT&T's and Comcast's
most recent reports filed with the SEC. AT&T, Comcast and AT&T Comcast are
under no obligation to (and expressly disclaim any such obligation to) update
or alter their forward-looking statements whether as a result of new
information, future events or otherwise.


                             ADDITIONAL INFORMATION

     In connection with the proposed transaction, AT&T, Comcast and AT&T
Comcast have filed a joint proxy statement / prospectus with the SEC. INVESTORS
AND SECURITY HOLDERS ARE URGED TO CAREFULLY READ THE JOINT PROXY
STATEMENT/PROSPECTUS REGARDING THE PROPOSED TRANSACTION BECAUSE IT CONTAINS
IMPORTANT INFORMATION. Investors and security holders may obtain a free copy of
the joint proxy statement/prospectus and other documents containing information
about AT&T, Comcast and AT&T Comcast, without charge, at the SEC's web site at
http://www.sec.gov. Free copies of AT&T's filings may be obtained by directing
a request to AT&T Corp., 295 North Maple Avenue, Basking Ridge, N.J. 07920,
Attention: Investor Relations. Free copies of Comcast's and AT&T Comcast's
filings may be obtained by directing a request to Comcast Corporation, 1500
Market Street, Philadelphia, Pennsylvania 19102-2148, Attention: General
Counsel.

     AT&T, Comcast and their respective directors, executive officers and other
members of their management and employees may be soliciting proxies from their
respective stockholders in connection with the proposed transaction.
Information concerning Comcast's participants in the solicitation is contained
in a filing made by Comcast with the Commission pursuant to Rule 14a-12 on July
9, 2001.


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