Exactly what I was wondering. I have both Atlantic Fleet and Cold Waters on Steam, and I'd like to know if they'll be available through GOG Connect as well.

We have yet to investigate setting up GOG connect.
However the Steam versions of our games are the exact same 100% DRM free versions as available on GOG.

Thank you for Your answer. I have been always launching Cold Waters through Steam client app and did not realize that the game is 100% DRM free even on Steam. I have just tried running it by the ColdWaters.exe file and it works without Steam client. Great!
If You decide to go with the GOG Connect program it would be a nice gesture towards people who have already bought the game on Steam. On the other hand I won't be the man telling you to throw away the money from people willing to buy the game for the second time - on GOG.
By the way - You did (and still are doing) great job with this game. One of the best titles of 2017. Keep up the good work!