Yes they will be releasing Adventurer mode in DF Steam. There is, I've read, some quirk in the Steam store agreement where if a game has a free version they mus

Yes they will be releasing Adventurer mode in DF Steam. There is, I've read, some quirk in the Steam store agreement where if a game has a free version they must have feature parity, so development will focus on bringing the Steam release to par with the classic version, and then both will be developed in step.