Apple iOS 8.3 software update

To update or not to update to Apple iOS 8.3 is the question now. There are people who said that after updated to iOS8.3, the battery life became weaker and shorter. I'm quite reluctant to update now if there is no major problem to my iOS system. Will there be an iOS 8.3.1? Maybe by June, there will be iOS 9.0? Any comments from people who have updated to iOS 8.3? Thanks.