Directly from Microsoft:
Microsoft will release the update today on Thursday, January 5, 2006, earlier than planned.
Microsoft originally planned to release the update on Tuesday, January 10, 2006 as part of its regular monthly release of security bulletins, once testing for quality and application compatibility was complete. However, testing has been completed earlier than anticipated and the update is ready for release.
In addition, Microsoft is releasing the update early in response to strong customer sentiment that the release should be made available as soon as possible.
Microsoft’s monitoring of attack data continues to indicate that the attacks are limited and are being mitigated both by Microsoft’s efforts to shut down malicious Web sites and with up-to-date signatures form anti-virus companies.
The security update will be available at 2:00 pm PT as MS06-001.
http://www.microsoft.com/technet/securi ... vance.mspx