I am not expecting them to seeing though the game has enough content as it is (compared to other FPS games) and they are adding even more content to it but if they did add those sets of levels in, it would be another reason for me to decide that this game would be FPS of the Year.
I have tried the demo of No Rest for the Living and it was great from what I've played and I've got the Master Levels (but I haven't tried them yet as I do not know how to use them with zdoom as it automatically uses the Steam Doom 2 wad) and it would also be nice to see them both in the same package.
Even if the 2 exclusive wads do not appear, I will still try to buy the game.