For some reason it only clicked for me yesterday that XCOM 2 was not only being ported to the Mac, but that it will have a simultaneous release! Coincidentally this coincided with the Digital Deluxe pack being available for pre-order which entitles you to all planned DLC for 2016. Neat!
https://xcom.com/news/en-xcom-2-digital-deluxe-edition-and-reinforcement-pack
https://xcom.com/news/en-xcom-2-digital-deluxe-edition-and-reinforcement-pack