Re-posted summary from the Federal Register website:
The Civilian Agency Acquisition Council, and the Defense Acquisition Regulations Council are hosting the first of at least two public meetings to start a dialogue with industry and Government agencies about ways for the acquisition community to transition to Secure Hash Algorithm SHA-256. SHA-256 is a cryptographic hash function that is used in digital signatures and authentication protocols.
The meeting is March 18, 2011 from 9am-noon EDT. Visit the Federal Register website for more details.