Before iOS 10 rolls out next month, Apple has snuck in what is possibly the final iOS 9 update. The iOS 9.3.4 available right now for all the compatible iPhone and iPad models is mostly a security update, so don't expect any noticeable changes. The update fixes one issue in particular, a memory corruption issue, which was addressed through improved memory handling. The issue would cause applications to execute arbitrary code with kernel privileges. Apple credits a team of jailbreakers - Team Pangu - for bringing this issue to light. The update also breaks the latest jailbreak...
Source: http://www.gsmarena.com/apple_releases_ios_934_security_update-news-19787.php
