I've got a htc_001 and downloaded the apps and force the update,
On the whole I am very very impressed, the new keyboard is cool, the voice typing works brilliant, and the improvements of project butter are great as well, and that's all I've noticed so far,
Couple of odd little things though, I can't get my wallpaper to be scrollable any more, and I'm not too sure on the battery improvements yet, without power save on my phone seems to be back to heating up alot and with it on all of the widgets have to reload every time I scroll to that page of the home screen.
Will see how it goes though
Definitely a brilliant update overall