I warn, DO NOT apply this update. I wish I could roll back so bad. I have a Verizon S6 for work, and after this update, my battery life is ridiculously low. Leaving my phone, screen off, on my desk for 11 hours and it dies. In battery settings I even have it set to MIN, which gives me an estimated life of 11h standby...... that is ridiculous. Even my MAX time is only 26 hours. I used to get 3x the battery if not more. My work phone is always idle and it would last days in my work bag as I travel. Now 11 hours idle time? What the heck happened?
After going back and forth on 100 settings I found it! So after the update, I was getting 6 hours of battery idle. If you go into Settings > Wifi > (ellipses in top right corner) > Advanced >Keep Wi-fi on during sleep - and change this from "Always" to "While Charging" my battery went back to normal use. I will charge up to 100% and post an image after my next drain to 0%. Hope this helps!