I did finally get this update on my Nexus 7 a week or two back. Overall, there aren’t that many differences, and it’s still missing real, useful permission controls.
Smoother. Kindle app, in particular, doesn’t seem to chug as much when reading books or scrolling through the list of books.
Many things now take longer. For example, getting to the settings requires two screen touches instead of one, and logging in requires swiping the screen before you can type the password. The animations are kind of useful, but time consuming.
The new look is flatter than the old one. I honestly don’t see why anyone thought it was worth investing all the time to develop, and some apps look much worse with the new look. Seems like change for change’s sake.