SWV 6.1 Service Pack 1 (build 6.1.5104) is now available for the public.
This build adds support for Windows 7 as well as two new features: Partial Activate and Profile Excludes.
See the Release Notes for more information
For Developers (a must read if you create custom tools)
SWV 6.1 SP1 SDK Guide Part 1: Changes in SP1 & Mounting Registry Hives