A week before WWDC 2016, which will debut on iOS 10, Apple released the second test Assembly iOS update 9.3.3 for developers. The firmware is aimed at the optimization of mobile devices, was released two weeks after iOS beta 1 9.3.3.
The update applies to iPhone, iPad, iPod touch, and contains a minimum of change, they mainly relate to the elimination of the identified bugs, improve stability and improve security.
The previous release iOS 9.3.2, as it is known, has proved not from the best side. The story of the update of the OS, irreversibly blocking some of the iPhone 6, in a slightly smaller scale was repeated with the 9.7 inch iPad Pro. In late may, Apple even stopped distributing iOS 9.3.2 for tablets because of error messages Error 56 locking the device. Later released an updated versionin which this fault has been corrected.
IOS release 9.3.3 is currently available only for developers. To install a test operating system on the main iPhone or iPad is not recommended, because there might be certain problems in the work. Apple promises to release the final version for ordinary users.
As already mentioned, 13 June at WWDC 2016 will be the new iOS 10. The first Assembly will be available on the day of presentation. The final version of the operating system debuts in September, with the iPhone 7.