iOS 17 brings a host of updates to the iPhone, big and small, and you can test them out right now if you download the iOS 17 public beta. While there is certainly reason to be cautious about installing any beta, Apple's public betas are traditionally quite stable, there have already been three developer betas since WWDC, so Apple's had time to get things spruced up.
I've been running the public beta since it launched and while I would say that battery drain feels a bit more aggressive, it's not so prodigious that I felt the need to switch back, but it's worth being aware of if you can't easily charge during the day. The good news is that if you do have any serious problems downgrading from iOS 17 to iOS 16 is a snap.
