edit sorry had the wrong tab open my bad if a mod sees this please delete this thread
Well Atari has finally released information on the “Atari 50: The Anniversary Celebration” DLC for GOG.

"We are currently working on bringing the DLC to GOG. If we are able to, it will be available early 2025"

So its being worked on coming at least heres where they announced it https://x.com/atari/status/1855360322292310338