My battery life has been pretty bad the last couple of days too. I updated over the weekend and made no changes to the settings. Battery life was fine at home where I rely on solely on wifi.
But at my office, battery was dropping like a stone - losing 15% an hour on standby, or more if I was doing anything at all. By lunchtime I was in the 40% range. I'm a very light user during the workday so this is not normal -- I can eke out 12 hours on a charge. Awake time was still a fraction of up time, and the top users were display, wifi, cell standby, and phone standby.
I noticed the wifi sleep setting was at 15 minutes - don't know if that was always the case, but I changed it to "never," thinking that maybe the constant sleep on-off was causing the problem. That seems to have slowed it to a more typical level of draining.
So I haven't seen any improvement in battery life, but it's not bad. I have chargers everywhere so I can deal. BTW, one positive note - post-update the phone seems to charge a lot faster. I still bump charge out of habit every AM, although I can't tell if it really makes a difference.