Much better! Over 14 hours right now, with moderate use throughout the day. Battery widget is showing 16% left...this will easily last until I plug in before I go to bed in a couple hours. This def was not the case prior to the update (I did update successfully yesterday).
I've had a few voice calls, emails, internet use, gchat, facebook app use, downloaded the update for Qik...pretty much what I would normally do with my phone on a normal work day. And, I use a live wallpaper and automatic brightness. Buddy has an Evo too, and he's also reporting a great improvement in the battery life. He's got about 20% left, going on 10 hours...and 43% of the usage was voice calls. Very satisfied! =)
BTW, neither of us use a task killer.