It looks like some icons got deleted. But doesn't that mean that there will be some missing icons when the Task Manager (I think, based on the name "twinui.dll") needs them?
I hope they really update the look. The windows 8 Tiles was actually not as well done as in the phone. That lead me to disappointment. Now this regular start menu taskbar thing is just really getting old. I hope there are more changes. I know performance wise and features they should be having some good features but the user interface really needs some work. it's been the same since 95. I'm excited for some more updates but so far besides some hints of metro user interface there hasn't been anything dramatic or that improve on the boring aero look.