The latest update to the Windows 10 preview is out, Build 10158, with a couple of improvements in addition to the usual bug fixes.
- Favorites import from other browsers
- Home button
- Password manager with auto-fill and form-fill
- Drag and drop tabs to a new window
- Audio works with hidden tabs or minimized tabs
- Better tablet-mode animations
- Better support for desktop applications and “modern” apps
- Swipe up to view All Apps
- Click a letter heading in All Apps to view a jump grid (like Windows Phone)
- Flight and package tracking alerts
- Voice-email now works
- Office 365 integration features (not in the consumer version I’m using.
- Works with Windows 10 (previous build had some problems)
- Better battery life
I've loaded it on a couple of different platforms (a Lenovo touchscreen laptop, an old Dell E6420 and on a Mac Mini running Parallels) and it seems to work fine.
If you're a Windows 8.1 user, I think you'll like it - Windows 10 is what 8.1 should have been...
See the update from Microsoft for more details: