Did the update yesterday and definitely am getting better battery life after changing my power options. The phone seems a bit more laggy than it was before, though. I have to admit that I've really cranked back my screen brightness, though, as well, to 20%, for most purposes. It does look better brighter, but it also makes a big difference in battery life. Now if I want to, I bet I could go a couple days - if I didn't use it a lot, that is. As far as the screen dead spots, it may be better, but I can't really tell. I was having sensitivity issues in some apps, and they don't seem as bad now. Time will tell for sure.