Crushing previous reports saying that Windows 8 would have up to nine editions, Microsoft has officially announced that its next Windows release, due in the second half of this year, will come in three main flavors, two for x86 systems - Windows 8 and Windows 8 Pro, and one for ARM-based devices - Windows 8 RT. The 'standard' x86 Windows 8 SKU will target consumer-grade PCs and tablets and will allow upgrading from Windows 7 Starter, Home Basic and Home Premium. Windows 8 Pro, which is aimed towards tech enthusiasts and business/technical professionals, includes everything in the non-Pro SKU and adds goodies like BitLocker and BitLocker To Go, Boot from VHD, Hyper-V, Encrypting File System, Group Policy and Remote Desktop (host). This edition also supports upgrades from Windows 7 Professional and Ultimate. As for Windows 8 RT, it will "only be available pre-installed on PCs and tablets powered by ARM processors" and will boast device encryption capabilities, and touch-optimized desktop versions of the new Microsoft Word, Excel, PowerPoint, and OneNote, but it's going to lack the Windows Media Player, Storage Spaces, or any 'Pro' features. For more info about the Windows 8 trio see the Windows Team Blog.