From Feral's Facebook page:
This almost certainly has to do with the terrible state of Apple's graphics support––the same reason Blizzard gave for Overwatch not coming to the Mac. Feral also had to recently cancel Arkham Knight, but the port was also a mess on the PC side, so it might not have been OS X's fault.
Unless 10.12 delivers, these problems are only going to accelerate as we get further into this console generation. Here's to hoping Apple has nice Vulkan and Metal 2.0 announcements for WWDC.
"While our aim was to bring F1 2015 to Mac, there were complications with the OS that put a spanner in the works. We didn't want you to end up with a game that doesn't handle well, so F1 2015 will not be appearing on OSX. However, we do have some fast developing plans for racing on the Mac that we think you’ll enjoy. Stay tuned (up)."
This almost certainly has to do with the terrible state of Apple's graphics support––the same reason Blizzard gave for Overwatch not coming to the Mac. Feral also had to recently cancel Arkham Knight, but the port was also a mess on the PC side, so it might not have been OS X's fault.
Unless 10.12 delivers, these problems are only going to accelerate as we get further into this console generation. Here's to hoping Apple has nice Vulkan and Metal 2.0 announcements for WWDC.