WWDC 2014 in June had the 'Zen Garden' demo running Unreal 4 on the Metal API [1], and it was released to the app store in September [2]. In a different session

WWDC 2014 in June had the 'Zen Garden' demo running Unreal 4 on the Metal API [1], and it was released to the app store in September [2]. In a different session, CryEngine was shown running Metal on an iPad [3]. That's two high-profile game engines already using the API. A limited release perhaps, but I count that as a significant head-start, all the while Khronos was just organizing glNext. [1] http://www.extremetech.com/gaming/183567-apple-unveils-metal-api-for-ios-8-will-shave-off-opengl-overhead-just-like-mantle-dx12 http://www.extremetech.com/gaming/183567-apple-unveils-metal... [2] http://appadvice.com/appnn/2014/09/unveiled-at-wwdc-2014-for-demo-of-apples-metal-epic-zen-garden-out-now-on-ios-8 http://appadvice.com/appnn/2014/09/unveiled-at-wwdc-2014-for... [3] https://www.youtube.com/watch?v=Thb2841jCQ4 https://www.youtube.com/watch?v=Thb2841jCQ4