Well, I just installed the update and I have to say, performance is awesome!!! I have not experienced any lag except when an app is "installing" after downloading.
Somethings I have noticed are:
1) There is now a camcorder icon and a camera icon. Even though you can switch to either one within the app, I guess for my quicker access to either or, there is now a separate icon for them.
2) Parental Lock app is installed now. I haven't opened it up and dinked around with it since I'm a parent, and I don't want to lock myself out of my own tablet.
3) Multitask list is different. Instead of it being vertical, it is now horizontal across the entire screen. I don't understand why it changed but just another thing to get accustomed to.
4) Multiple accounts. I haven't dinked with this either since this is MY tablet and none shall use it besides me!!
5) Fonts look better. Hard to explain but it just does.
That's about all that I have noticed thus far. But the biggest thing for me was the performance increase. On 4.1, even with Performance Mode turned on, I would experience lag quite frequently making me wonder if my Infinity truly had a Tegra 3 powering this thing. But so far, it's been smooth as butter. Very happy. Hopefully, it remains this way.
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD