Myrkel, I would really suggest getting a pre-release copy or something to try it out before upgrading. Its very, very different.

One of the first things I did was, as another user did, create two shortcuts to shutdown and reboot. The new method is absurd.

Also, you can't just hit F8 to go into safe mode anymore. The new method, Shift-F8, only works if there's an actual problem that Windows detected is what I'm reading. I've never had Shift-F8 work.