I suppose that "Google 2.0" includes a few more tweaks besides just the typical universal search. Google's revamp which was first covered by Danny at Search Engine Land has more than just universal search: the search engine has been resdesigned and now uses CSS.
This was picked up on WebmasterWorld:
The lightly tinted bar, with graded colouring, containing the search keywords, tipped me off to this!
Just look at that source code on any Google SERPs.
CSS up the wazoooo... (about time too!)
Indeed, it's rather nice, but I'm still getting used to it. :)
Forum discussion at WebmasterWorld.