400 Howard Street
San Francisco, CA 94105
|Tel +1 415 670 7987|
Fax +1 415 618 5462
November 6, 2012
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549
|Securities Act File No. 333-92935|
|Investment Company Act File No. 811-09729|
Ladies and Gentlemen:
On behalf of the Registrant and pursuant to Rule 497(e) under the Securities Act of 1933, as amended, attached for filing are exhibits containing interactive data format risk/return summary information that mirrors the risk/return summary information in the 497 filed on October 23, 2012 to the prospectuses for the iShares Core Long-Term U.S. Bond ETF (the Fund). The purpose of the filing is to submit the 497 filed on October 23, 2012 in XBRL for the Fund.
If you have any questions regarding this filing, please contact Benjamin Haskin of Willkie Farr & Gallagher LLP at (202) 303-1124 or me at (415) 670-7987.
Very truly yours,
|cc:||Benjamin Haskin, Esq.|