After years of criticism that the OS came in too many different editions, Microsoft's move should eliminate much of the confusion
Finally! After years a slightly different versions of the same operating system, Microsoft announced today that Windows 8 will come in only four versions: One for home use, one for business, one for devices running ARM chips, and one for large enterprises who buy in bulk.
For most people buying an operating system for a traditional desktop or laptop, the choice will be between just two versions. The version called simply "Windows 8" is designed for home users. "Windows 8 Pro" is for business users and includes features for encrypting a file system, virtualization, and domain management.
"Windows RT" is the new name for what had been called Windows on ARM. You won't be able to purchase it on its own; It'll come pre-installed on PCs and tablets that run ARM processors. Windows RT won't be able to run traditional X86/64 desktop software. Instead, it'll run touch-oriented apps based on Windows Runtime (or WinRT), Microsoft's programming model for mobile apps. Apps for the touch-oriented Metro interface are built using Windows Runtime.
Windows RT will come with special touch-oriented versions of Microsoft Word, Excel, PowerPoint, and OneNote.
| Feature name | Windows 8 | Windows 8 Pro | Windows RT |
| Upgrades from Windows 7 Starter, Home Basic, Home Premium | x | x |
|
| Upgrades from Windows 7 Professional, Ultimate |
| x | |
| Start screen, Semantic Zoom, Live Tiles | x | x | x |
| Windows Store | x | x | x |
| Apps (Mail, Calendar, People, Messaging, Photos, SkyDrive, Reader, Music, Video) | x | x | x |
| Microsoft Office (Word, Excel, PowerPoint, OneNote) | |
| x |
| Internet Explorer 10 | x | x | x |
| Device encryption |
| | x |
| Connected standby | x | x | x |
| Microsoft account | x | x | x |
| Desktop | x | x | x |
| Installation of x86/64 and desktop software | x | x |
|
| Updated Windows Explorer | x | x | x |
| Windows Defender | x | x | x |
| SmartScreen | x | x | x |
| Windows Update | x | x | x |
| Enhanced Task Manager | x | x | x |
| Switch languages on the fly (Language Packs) | x | x | x |
| Better multiple monitor support | x | x | x |
| Storage Spaces | x | x | |
| Windows Media Player | x | x | |
| Exchange ActiveSync | x | x | x |
| File history | x | x | x |
| ISO / VHD mount | x | x | x |
| Mobile broadband features | x | x | x |
| Picture password | x | x | x |
| Play To | x | x | x |
| Remote Desktop (client) | x | x | x |
| Reset and refresh your PC | x | x | x |
| Snap | x | x | x |
| Touch and Thumb keyboard | x | x | x |
| Trusted boot | x | x | x |
| VPN client | x | x | x |
| BitLocker and BitLocker To Go | | x | |
| Boot from VHD | | x | |
| Client Hyper-V | | x | |
| Domain Join | | x | |
| Encrypting File System | | x | |
| Group Policy | | x | |
| Remote Desktop (host) | | x | |