That's right, folks! You can start downloading Windows Server 2012 for free with your basic (verified) DreamSpark account. The good thing about it is that you can pretty much use it as a full version of Windows 8 (with some extra server additions) for free . Although there are some differences, you can also check out a guide on how to use WinServer 2008 as a Win7 replacement here.
I can't wait to install VS 2012 on it and start making Metro apps!