I get the impression that they are creating change for the sake of change- and have actually made things a little more gimmicky, instead of functional.
It seems to require more clicks to do the same tasks, and still does not address some of the functionality that people have been asking for. Eg allowing each desktop to have their own backgrounds and icons etc.
These are my initial thoughts, but Im going to wait for the final product before I judge it, but I must say, by reading the response on the internet, I think they are going to loose a large number of users