2017.4.16f1 Release Notes
Android: Added experimental arm64 support
Animation: Improved performance for Animators that don't use Animation Events or don't use State Machine Bhehaviours
Package Manager: Loading the same service config as the Unity Editor and the Hub.
2D: Fixed Collider2D only regenerates when Auto Tiling is enabled in Collider2D (1083871)
Android: Fixed a crash when creating Texture2DArray in ETC format on Adreno 3xx on devices with Android 4.4 (1077349)
Editor: Clarified size values presented by the Build Report. (1006704)
Editor: Fixed an issue where the Unity credits in the About window may have appeared incomplete (978584, 1100122)
Editor: Improved performance for EditorCompilation.CheckCyclicAssemblyReference, which would be very slow for projects with a large number of .asmdefs and many dependencies between them. (1095709)
Graphics: Fixes a memory leak which can occur during job based rendering (1090901)
Graphics: Fixes a race condition in the culling code that would free memory of a job that is still in-flight leading to a crash in the editor (1062032)
Graphics: Fixes a synchronization issue that was exposed by fixing a race condition in the shadow culling code (1074200)
iOS: Fixed wrong Screen.safeArea on iPhone on Start() (1085662)
Package Manager: Fixed a vulnerability where a malicious attacker could access the local server from a script served on the internet by using DNS rebinding. This is fixed by validating the host header of all http requests.
Physics: Improved performance when baking meshes offline. (1075709, 1091814)
Shuriken: Fixed prewarm bug causing particles to emit incorrectly (1064065, 1081809)
Timeline: Fixed crash happened when Timeline was outputting sound to a disabled Audio Source. (930758)
UI: Add permanent interests to RectTransform hierarchy in order to catch changes inthe hierarchy.
Windows: Fixed standalone player crashing on startup on machines where Citrix Workstation is installed. (1082241)