Due to the popularity of this classic growing each year Disney is reported to be considering a sequel OR even a live-action movie.
Moviehole said there are talks going on at at Disney to “do something with Nightmare Before Christmas probably a sequel but live-action possible”. Disney has started to bring back some of their classics and turn them into live-action. It started off with the Jungle Book and Beauty and the Beast. Now on the way we're getting the Lion King, Dumbo, Aladdin and now we could be seeing Nightmare Before Christmas live-action remake.