I've had the opposite outcome concerning battery life. Prior to the ota, I was getting about 16 hours of life out of my battery (100% down to 0%). SBF'd yesterday morning and performed the upgrade. Unplugged around 9:00am at 80%. Was amazed this morning when I woke up to 30% still remaining after 21 hours. (over 3 hours listed on battery manager for the display which is alot better than I was getting) Prior to the upgrade I was running the display at 30%ish, but have had it on auto since the upgrade to see if its any better. Very happy.
This leads me to believe that one of the apps that I had installed was draining the battery as opposed to the OS. I reinstalled most of my apps after the upgrade, but switched battery widgets and didn't reinstall some other oddball apps. Still leaves the list fairly long to know for sure though.
The only app I've found that seems to hang on me now is YouTube. Had it freeze up on me last night, but other than that, I've been happy. No more FC on the battery manager or maps yet (knock on wood).