Apple has today released iOS 9.3.5 to users. With no testing by developers, it comes almost a month after the last update. In this version we see a few security fixes and improvements. Most notably is a fix for three major security exploits found by hackers not too long ago.
This update is available to all users of iOS 9 right now. To get it, users can go to Settings and get it from there. You can also manually download it via iTunes or the IPSW file.