[microcolonel]

This seems pretty underwhelming. Swift isn't even a platform feature. Metal is mostly useless for portable application developers, who probably wish it were Vulkan; and furthermore it may indicate that the quality of the OpenGL stack will degrade over time. Given how little time is actually spent entering payment details, I do it maybe once a month, I also don't see the point in Apple Pay on OS X except perhaps for completeness.

The deeper platform features, especially the new filesystem, are exciting primarily because they're replacing vastly outdated predecessors.