Microsoft announced the Windows 10 Preview earlier this week. I tried it out. On my wife's laptop - like they suggested. Actually, they didn't. But do not install it on your primary or production system.
Three things I tried out right away -
- The "Start" screen combines best of both world - The old Windows Start menu with search box + the Windows 8 start screen. This is the default view. Which means no more disconnect between the tiled start screen and the desktop view. Of course, you can maximize the start screen.
- Snapping desktop apps side-by-side. This was possible earlier only with "metro" style apps on Windows 8. Totally useful if you do not have multiple monitors.
- Copy-paste in the command line!
Make sure to use the free upgrade which is valid only a year after release (post May 2015) to users of Windows 7 and Windows 8.1.