Nightshift in OSX...When?!

When will Apple make Nightshift for OSX?

I know there's f.lux but f.lux doesn't work as seamlessly as Nightshift and causes lag during transitions even on my relatively powerful quad core 15" rmbp dgpu.

I hate to advocate a multinational squishing a little company like flux but When is Apple gonna put this in Mac OS X?

I thought this would be in the last update as they have been bringing everything else from iOS to OSX...