Besides the return of the Start button in Windows Server 2012 R2 - which brings you straight to the Start main page (no All Programs cascaded menu/sub-menus though) - and boot straight to the Desktop, the hidden gem is the new PowerShell version 4.0.
Go download and test drive the Cloud OS Windows Server 2012 R2 and System Center 2012 R2 Preview Releases today (choice of Datacenter Edition running the full GUI or server core)!
* Tue 25 June 2013
** both ISO and VHD format
- Windows and Windows Server compatibility cookbook: Windows 8, Windows 8.1, and Windows Server 2012 (link)
- What’s New in Windows Server 2012 R2 (link)
- 10 excellent new features in Windows Server 2012 R2 (link)