ios 12 beta 7 massive boost to battery life iPhone xs

So since I bought my iPhone xs at launch, it had pretty good battery life but after the first update, it all went downhill. Since then every update just made it worse and now I wanted to try ios 13, since it's almost time to release so most of the bugs are fixes, Beta 6 was bad and my phone drained even more, but now beta 7 is awesome, battery life is back to normal (At least lot of better than before and almost like when I bought it). So hopefully they don't change this for official release.