As Lead-Developer of The Source announced, there might be a possible future plan to release a later version of The Source also for Playstation 4 and Microsoft's Xbox systems.
These possible versions of The Source would be developed seperately.
The PC and Linux version of the Game will be released at first through digital publishing media and with addition of 2 month the Mac version will follow the planned release.
The console versions might be released months after the final release on PC / Linux as Lead-Developer of The Source stated.