In addition to Touch ID enhancements and bug fixes, it looks like iOS 7.1.1 also brings about battery life improvements. Several users are reporting seeing markedly-improved battery life since installing the update, which Apple seeded to the public on Tuesday.
ZDNet's Adrian Kingsley-Hughes says that battery performance on his iPhone 5 dropped significantly following last month's iOS 7.1 release. But since updating to 7.1.1, Hughes says that it's gone back up to just as good, if not better, than it was when he first got it...