tfishell: I must admit I'm disappointed but I have plenty of games to play (and it's my own fault for getting excited anyway :P). I still find it strange GOG hasn't or can't bring Hexen/Heretic and Commander Keen; those should be easy.
I don't think it's that easy, actually. It seems that Raven (and as a result, Activision) has, at the very least, retained the trademark for Heretic and HeXen, which means that Bethesda might only have limited publishing rights for the games, which might explain why they haven't released the games in any other store. As for Commander Keen, it's possible that GOG might be trying to bring all 6 episodes here and it might be taking more time than usual, as the 6th episode isn't owned by 3D Realms/id.