According to canouna, there are quite a number of changes, like Metro apps zooming, changeable metro background color, and more.
People had assumed that Media Center was dropped, because it wasn't included in the developer preview; but back in September, Steve Sinofsky put that rumor to bed saying "I want to reassure customers that Media Center will definitely be part of Windows 8. No doubt about it. "
Windows 8 Beta on the way?
Posted on Wednesday, October 26 2011 @ 16:11 CEST by Thomas De Maesschalck