The Centerstage project has been in high gear the last couple of weeks. On the framework dev side, conny tells us that the code is being hammered out and taking shape (see dev updates here.)
Meanwhile, the logo is probably going to look a lot like one of these:
As for the GUI, a number of striking mockups have been rendered and even animated. Two prime examples are Cosmo's and alittlemelty's designs, which are presented in this post below. To view the entire GUI Gallery go here.
(Gorgeous quicktime animations here and here!)