Not quite at the 8 hours usage and day+ standby yet (as it was still at 27% to go but I believe it still managed to hit 8 hours and 1 day like I normally can.) Here are some SS's from a few days ago.
This is exactly how my iPhone 6 has been even since iOS 8.0 and all the way up through everything else. PB 1 and 2 were quite bad and PB 3 has been similar to iOS 8. I still miss 8.2, I consistently got 8.5 hours or more from that version. Got 10 hours for the first time ever back then. Then 8.3 came along and I couldn't get any more than 6.5 hours, still can't.