This is not meant to be a thorough report, just the highlights I found relevant related to its recent release.
- Starter is weak (for netbooks) 32-bit only, OEM pre-install only
- Home Basic is for emerging markets (we probably won’t see it in the US much)
- Home Premium is what most consumers will end up with
- Professional is the lowest version to include features such as Remote Desktop Serving, Domain Joining, and Windows XP Mode
- Enterprise is the same as Ultimate but with volume licensing and they both include BitLocker
- Ultimate has all possible features (of course)
- Supposedly 7 can be installed from a USB drive (without hacking).
- Internet Explorer 8 can pretty much be removed – many parts are integrated into the OS, but the browser can go bye-bye.
- The sidebar is gone but Gadgets remain, and are more efficient and movable.
- There is an overly hyped new taskbar.