?!?! The camera is better with 4.1.2. I don't know how much but I took a bunch of pictures over the weekend and it seems to do a much better job focusing.I love this update! My phone is fast and snappy and the already outstanding battery life is even better. I had to revert back to ICS because I had the camera and keyboard from 4.2 installed so I lost that but I'm hapy with the trade off
As far as the keyboard goes, do yourself a favor and just get SwiftKey!