Multiple topics have been opened about this issue. I'm just relaying the bad news here... https://www.reddit.com/r/Stardock/comments/a72cpw/new_minor_factions_dlc_for_sins_of_a_solar_empire/ehysxqo/ Due to resource constrain
Thanks for the reply, although I'm having a bit mixed feelings at the moment. It sounds like bringing it to GOG is not a priority (or at least not a "concrete plan"). It would be extremely sad for players that supported the game on that platform to end up with an obsolete version of the game compared to Steam users. It somewhat turns the good news to see a new DLC into bad news. Hopefully, you will find it relevant to deliver it on GOG and find the ressources to make that move