Microsoft has revealed the various editions of Windows 8. It has been reduced to mainly three (3)(*), down from the previous five main editions (plus one for Enterprise for a total of six) associated with Windows 7.
- Windows 8: the standard version, for the consumer market (x86/x64)
- Windows 8 Pro: for technical professionals, business customers, enthusiasts (x86/x64)
- Windows RT: for low-powered PCs/tablets running ARM CPUs (previously known as "Windows on ARM" or "WoA")
For more details please refer to:
http://windowsteamblog.com/windows/b/bloggingwindows/archive/2012/04/16/announcing-the-windows-8-edi...
(*) there will be 4th... this one is a Pro version with addtiional features for enterprise customers with software contracts, just like Windows 7 Enterprise.
