If you read my blog off and on (more off recently), you may be interested in the team blog located at the following location:

http://blogs.technet.com/antimalware

Jason Garms has posted the first intro to this blog http://blogs.technet.com/antimalware/archive/2005/11/01/413466.aspx, and these blogs will be a good place to check in with the developers and program managers of some of the security products here at Microsoft.

-steve