The Starter Edition (SE) is mainly aimed at . With SE customers will be able to run only 3 applications at the same time but will benefit from such as the new taskbar and . Also, users will be able to join a Home Group (to share media files over a local network).
Windows 7 Home Basic
The Home Basic Edition (HB) is basically the equivalent of edition and will allow the use of unlimited applications at the same time, while bringing further UI enhancements such as live thumbnail previews and 'enhanced visual experience'. Additionally, HB also enables advanced networking support like Internet connection sharing (including over wireless) and brings the Mobility Center (power management for laptops).
Windows 7 Home Premium
The Home Premium (HP) version will bring all the visual goodies of Windows 7 like the Aero Glass UI and the advanced window navigation. Besides touchscreen implementations (handwriting recognition, multi-touch), the Home Premium edition also brings improved media format support and enhancements to Windows Media Center and media streaming.