Quote Originally Posted by Ars Technica

Here is how the different versions differ from each other:

-Windows 7 Starter (worldwide via OEM only): up to three concurrent applications, ability to join a Home Group, improved taskbar and JumpLists

-Windows 7 Home Basic (emerging markets): unlimited applications, live thumbnail previews and enhanced visual experience, advanced networking support (ad-hoc wireless networks and Internet connection sharing), and Mobility Center

-Windows 7 Home Premium (worldwide): Aero Glass and advanced windows navigation, improved media format support, enhancements to Windows Media Center and media streaming, including Play To, multi-touch and improved handwriting recognition

-Windows 7 Professional (worldwide): ability to join a managed network with Domain Join, data protection with advanced network backup and Encrypting File System, and print to the right printer at home or work with Location Aware Printing

-Windows 7 Ultimate (worldwide): BitLocker data protection on internal and external drives, DirectAccess for seamless connectivity to corporate networks based on Windows Server 2008 R2, BranchCache support when on networks based on Windows Server 2008 R2, and lock unauthorized software from running with AppLocker

-Windows 7 Enterprise (volume licenses): same as Ultimate, includes the following improvements: DirectAccess, BranchCache, Search, BitLocker, AppLocker, Virtualization Enhancements, Management, as well as Compatibility and Deployment.
Linky to full article

I think its quite good that professional will give domain support. I don't really see the point of starter edition, home basic should I think be the entry point.

edit: didnt realise hexus reported on this yesterday

http://www.hexus.net/content/item.php?item=17082

Mods please delete.