YMMV, my iPhone 12 Pro is getting better battery life vs. 14.6, not that 14.6 was bad for me to begin with.Is there any different from this to 14.6 apart from changing timers in home app is there any reason to update from 14.6?
For new features, the only thing I've found that's new is the ability to lock the Apple Watch in the notification banner when the iPhone unlocks the Apple Watch, post #30.