Windows 7 Starter

• Broad app and device compatibility with up to 3 concurrent applications
• Safe, reliable, and supported
• Ability to join a Home Group
• Improved taskbar and JumpLists

Windows 7 Home Basic (emerging market only)

• Live Thumbnail Previews & enhanced visual experience
• Advanced networking support (ad-hoc wireless networks and internet connection sharing)
• Mobility Center

Windows 7 Home Premium

• Aero Glass & advanced windows navigation
• Easy networking & sharing across all your PCs & devices
• Improved media format support, enhancements to Windows Media Center and media streaming, including Play To
• Multi-touch and improved handwriting recognition

Windows 7 Professional

• Ability to join a managed network with Domain Join
• Protect  data with advanced network backup and Encrypting File System
• Print to the right printer at home or work with Location Aware Printing

Windows 7 Enterprise and Ultimate

• BitLocker data protection on internal and external drives
• DirectAccess provides seamless connectivity to your corporate network.  (requires Windows Server 2008 R2)
• Decrease time branch office workers wait to open file across the network with BranchCache. (requires Windows Server 2008 R2)
• Prevent unauthorized software from running with AppLocker

Inoltre

• Ultimate includes all Enterprise and all Home Premium features, including multi-language packs.
• Windows 7 Enterprise is available only through Microsoft Volume Licensing

Ognuna delle versioni, comprende tutte le features della versione precedente; in caso di aggiornamento, quindi, si guadagneranno solo opzioni senza perderne nessuna.

Ancora però non si sanno data di rilascio previsto e prezzi al dettaglio.