There are about 55 different screenshots taken by PC Magazine and it is linked here.
When I looked at the Vista screenshots I noticed that really it looked like XP with a skin on top. The only difference is the new sidebar and some other customization features that really are little things to the Operating System.
I believe everyone that gets a Vista will be extremely let down at the end. That is if you are a power user and actually know anything about computers. To the average user, Vista will seem great, new, exciting. They will be fascinated by the eye candy but really to the finer eye there will be nothing superbly better.
I think, still, Mac OS X has made greater leaps and bounds and it is already out.