Wow, WordPress 2.7 is really different from 2.6.X and below. Need to take some time to get use to it. The layout is totally different.
The only problem I encountered right now is that I cannot use flash upload. I have not really look into the problem. Anyone out there have this problem?
Here is another screenshot of WordPress 2.7. On the dashboard, it has something call the QuickPress.
There are too many changes that is hard to describe. Try it yourselves or wait until we have more information on the bug that I had encountered.