New DLC for Barony...Steam only or here too...one day.
Or maybe the dev don't want to deal with GOG anymore?

Great!
I was worried because of this:

https://www.gog.com/forum/barony_cursed_edition/reasons_for_delayed_updates_and_why_future_game_from_barony_devs_wont_be_on_gog_sources_included

The DLC does not work it still says its locked after installing it both into the gog galaxy and offline installers. Any help with this would be appreciated.

Check the MythsAndOutcastsSerialKey.txt file in the game directory. There is a serial key that you need to enter in the game.

Cheers, so in the corner written in the smallest writing, on a massive screen, that you would easily miss is the option to type in the code. Great UI design. Thanks for the assistance.

I was also confused. I wrote a ticket to the support before I found out how it works. :/