The Zen demo looked absolutely amazing, my jaw literally dropped 
Is there any chance that Apple developer program members would be able to see the UE4 metal specific code earlier (since we have access to the iOS8 and are under NDA anyways), similarly to how playstation and xbox developers get access to the code specific to their platform?
Also will the Zen level be released on the Marketplace as well? Quite a few really interesting features there that I would love to take a peak at