Ich glaube es ja nicht; soeben ist das Update für den Mac (und wahrscheinlich auch für Linux) rausgekommen.
Version v1.1.1
Ingame Version 1.0.0.260 (163994)
Hier noch der Kommentar von Aspyr:
UPDATE 07/02/18 - Spring 2018 Update now out!
Important note about cross platform multiplayer: While it was our sincere goal to have cross-platform play between Windows and Mac/Linux in this update, we were unable to meet that goal due to some immersion-breaking bugs that occur specifically with cross-platform play. Quality is simply too important to Aspyr and our partners so we elected to release this update while we continue to work on these remaining issues.