TechEd 2013 had a bunch of great sessions on Windows Server 2012 R2, which has a boatload of new features. You can now download Windows Server 2012 R2 Preview version now. Pick up your copy here. Windows 8.1 release preview will come out tomorrow, but you can get a jump start on seeing the new start button and other changes with Windows Server 2012 R2.
I have nine articles from TechEd 2013 that cover a wide range of new features in Windows Server 2012 R2, which should RTM later this year. Read up on many of those new features here. I’m really excited about this release, and will be beating up on the preview version in the coming weeks. And yes, you can now shutdown directly from the new start button!
You can check out more of the features in WS2012 R2 here.