- All Windows 7 applications will run natively on Windows 8
- Security update notifications have been minimized to the lower right of the log-in screen
- Refreshed Windows Task Manager suspends apps when they're not running on-screen
- New "Reset and Refresh PC" functions enable simplified system wipe and restore
- HyperV virtualization software comes pre-loaded on Windows 8
- Multi-monitor support now enables a single background across screens, as well as monitor-specific task bars
- Multi-touch support enabled for Internet Explorer 10
- Magnifier function enhanced for desktop manipulation
- Optional thumb-by-thumb input mode
- SkyDrive storage support integrated into all cloud-based apps
- Metro-style refresh for Mail, Photos, Calendar and People apps with Windows Live ID
- Settings roam allows for preferences to sync across a user's Windows 8 devices
- Continued update support for Windows 8 Developer Preview Beta
- Even a Lenovo S10 (first-gen Atom + 1GB of RAM) can "run" Windows 8
- There's "no overlays" with Windows 8; Metro-style goodness is baked into the core
- Both Metro-style and conventional Win32 apps will be sold in the Windows Store
- Windows 8 devices equipped with an NFC chip will be able to use a tap-to-share feature to either send content from one device to another, or simply receive content from something like an NFC-equipped card.
- Logins will use a photo-based system
- Apps will be able to natively connect and understand one another (if written as such)
- Built-in antivirus software will ship in Windows 8
- There will not be a different edition of Windows 8 for tablets, and presumably, not for Media Centers either
- It's unclear how many "editions" (Home, Professional, Ultimate, etc.) of Windows 8 there will be
- ARM devices will be supported, but not in the developer preview
Follow our continuing Build 2011 / Windows 8 coverage here!