In time I'm sure some of the changes made for win8 and touch will be fully explained.
One thing I noticed right away was the new interface for PC module assignments. Now when you want to select something there's a little tile to choose. It took me a minute to realize that they are sized just right to select with your fingertip.
Do you think there will be any explanation of how the GUI is evolving just for win 8 an touch screens?