Update 4.1.57 to be released 3/29
11:00pm EST, and my phone is downloading the update.
1st thing I'm noticing is a lot more detailed battery usage statistics screen. Actually broken down by applications and giving me a percent for each.
Fingerprint reader worked just about every time I tried it, whereas before there were a few attempts to unlock where my finger was right on the thing but it didn't pick it up.
Facebook notifications seem to be working where it's popping up in my top bar.