As far as I can tell, the only place the patch is mentioned is on their twitter. I'm not sure it's something they can advertise on Steam. Don't know how Steam works for developing H Games and patches that add 18+ content.I didn't even know the patch existed. I just patched it, and all the content from RPGM is in the game. The gallery room is also there. However, the sandbox still confuses me with the AI background.