The RetroMania dev has confirmed that he wants to bring RetroMania to as many platforms as possible. That was his direct response when I asked him about Gog.com.

Given the arguably complex licensing behind those types of games, RetroMania might be our only hope to get a wrestling game on this platform!

I never even thought about RetroMania wrestling coming to GOG, as i just considered it too good to be true. If the dev has confirmed he wants to bring it to as many platforms as possible though, i think there is a chance. That would be so cool, because GOG is indeed sorely lacking wrestling games.

Yes but don't expect it any time soon. They are still working on a ps4 release and the DLC for all versions. Gog.com will be a back burner effort for them because Gog.com won't generate as many sales as Steam.

Let's see what happens. Gog.com is seriously lacking many genres of games.