If you aren't already, you may want to check out the blog at http://blogs.technet.com/msrc/default.aspx. It is the Microsoft Security Response Center (MSRC) blog.
MSRC is now on Twitter @MSFTSecResponse
On April 13, 2010, Microsoft is planning to release 11 new security bulletins. Below is a summary.
* The list of affected software in the summary table is an abstract. To see the full list of affected components please click on the "Advance Notification Web Page" link below and review the "Affected Software" section.
Advance Notification Web Page: The full version of the Microsoft Security Bulletin Advance Notification for this month can be found at http://www.microsoft.com/technet/security/bulletin/ms10-apr.mspx.
Microsoft Windows Malicious Software Removal Tool: Microsoft will release an updated version of the Microsoft Windows Malicious Software Removal Tool on Windows Update, Microsoft Update, Windows Server Update Services, and the Download Center.