iPhone 5, Sprint.
Had iOS 7 beta 6
Mid 2010 Macbook Pro
iTunes 11.1 beta 1
Backed up to the cloud, then backed up to iTunes.
'Option+Restore'
After phone rebooted I chose to restore from the last computer backup in iTunes.
Restored from backup no problem.
I didn't use my phone quite as much today as I have the rest of this week- but definitely enough to see that my battery life has VASTLY IMPROVED over the beta. Charging times seem to have gone down as well.
I live and work in areas with extremely weak cell signals (for Sprint/Verizon anyways) so I know that has a negative effect on battery. (Tuesday the solar activity was so bad that I could literally stand in one spot and watch my battery % going down, but that's a story for another time!)
Today I can tell already my battery life has improved over the betas. Might even be better than it was on iOS 6, but it's been awhile since I was on that so I couldn't say for sure.
So far I'm happy. (Have really liked iOS 7 since I first installed the beta, too)