This just in from Nick White on the Windows Vista Team Blog, thanks to betax for the heads up.
I encourage you to download and install Windows Vista RC2. We're almost finished with Windows Vista – RTM is almost here. Submit as many bugs as you can as we continue to work hard toward shipping.
Windows Vista RC2 is now available to Customer Preview Program participants for a limited time. If you're in the CPP use these links to access RC2:
Download: Windows Vista RC2 (x86 and x64) English
Download: Windows Vista RC2 (x86 and x64) German
Download: Windows Vista RC2 (x86 and x64) Japanese
View: Windows Vista Team Blog