Over at the Windows Vista blog, Brandon has compiled a handy list of official Microsoft team blogs. Here's a sample:
Windows:Windows Vista Team BlogInternet Explorer Team BlogWindows Mobile Team BlogTablet PC Team BlogMicrosoft Update Team BlogMicrosoft RSS BlogMicrosoft Photography and Video BlogXPS Team BlogWindows Home Server Team BlogWindows SideShow Team BlogWindows Ultimate BlogWindows Core Networking BlogWindows Vista Security BlogShell: Revealed Blog (Windows Shell)Network Access Protection BlogWindows Sidebar Team BlogWindows Genuine Advantage Blog
You can find the full list here.
Isn't this the last week of summer. I'm hoping there will soon be some activity on the Vista Ultimate Blog regarding the extras.