The first change you'll see is when you wake the display up. It shows a highlighted boxes, one with an add sign, just beside the clock, indicating that you can add another widget for the lock screen. The digital clock looks a little different too with the hours bold.
The analog clock looks prettier too. Minimalistic yet modern and pleasing.
It might just be me but the app menu is nicer too with the icons seems to stand out as the black looks darker.
And when the keyboard is activated, you can immediately try out the 'gesture' typing as shown. From my little time with it, I feel it is easier than Swype.
First impression so far is positive coupled with a much more responsive system