Just got the new update too (4.0 Prime), and overall liking it (plus liking Android 5.1.1 on my N7, finally a Lollipop that doesn't freeze or crash!). But there is one small fly in the ointment, namely the desktop overview screen.
Before it used to be the nice grid showing all screens at once, whereas now it's a horizontally scrolling bar where you have to scroll through to the screen you want and then tap it to go to it. But it's just as much effort as to just swipe-scroll on the desktop itself to go to the relevant screen.
My question is, is there anywhere in the settings that I can go back to the single-page grid overview rather than the ribbon-bar way? I've looked through the settings and can't find anything, although there are so many there now that I might have missed one. Can anyone point me in the right direction there?