I have no doubt Mark will release another album, he said in interviews about some of the songs on ODR being slow, and the next album should have more uptemo ones. He is a full time song writer now, not a performer, so, what else is he going to to with his time? if his health allows it, or course he will record more songs, he has said before he is compelled to do it, and he doesn't know what else to do.
I am more hopeful that he documentary will be released, now the touring days are over, it gives an end to the film.