I seem to have much better battery life after update. I'm a heavy user on N900, normally have to plug it in at least twice a day. But here we are at almost lunch time and I'm still about 80% full on battery. I've been using FM transmitter on my drive to work, browsing, took 2 phone calls over skype, and been using bluetooth headseat to listen to a podcast for the past few hours. Seems to be retaining more of a charge on the battery since the update...in my opinion.