The battery life seems exactly the same to me. I usually use battery level by the time I reach work as a gauge of how consistent my battery life is and so far it is the same.
I noticed a small improvement days before the update though that I thought was pretty odd. Can't figure out what did it.
I got the OTA Thursday ,so it hasn't been that long ,the one full cycle I had was able give me about an extra 20 minutes screen time . I know I'll need more than a few days to know for sure.