A useful list of Microsoft blog sites for reference:

Windows 8 News

http://windows.microsoft.com/en-US/windows-8/preview

Windows 8 Blog | Building Windows 8

http://blogs.msdn.com/b8

Windows Virtualization Team Blog

http://blogs.technet.com/virtualization

The World Simplified is a Virtual World

http://blogs.technet.com/virtualworld

The App-V Product Team Blog

http://blogs.technet.com/appv

The Official MDOP Blog

http://blogs.technet.com/mdop

Ask the Directory Services Team

http://blogs.technet.com/askds

Ask the Performance Team
http://blogs.technet.com/askperf

Microsoft Enterprise Networking Team
http://blogs.technet.com/networking

Ask the Core Team

http://blogs.technet.com/askcore

Ntdebugging Blog

http://blogs.msdn.com/ntdebugging

The Hot Blog

http://blogs.technet.com/hot

TRM
http://blogs.technet.com/trm/default.aspx