I’ve seen a couple others complaining of this in the update thread. I used to get at least a day out of my battery, and it’s now draining within about 5 hours. I’m using it just as much as before, in the same ways, but the battery is draining much more rapidly.
This is really the only complaint I have with the update. It somehow messed up my battery and I don’t know how or what to do about it.