Downloaded the beta this morning to my 7 Plus and it's like someone has stuck a supercharger in my phone. Much faster, everything you do is animated etc. I'm not a phone geek per se, but I like things to be efficient, and it's much better.

One great feature though is Do Not Disturb whilst driving. It magically knows (GPS I guess) when I'm driving and when set to on, you don't see any distracting messages or popups etc. I noticed when I have the tomtom app running that it bypasses the DND mode, but for the most part, it's great at stopping temptation to look at your phone.