I am working on jumpxtreme4 right now. It should be finished at october 2013 but could get delayed by a few months. I will publish it here in jkhub when its finished.
Lol, i completely forgot about this post. Jumpxtreme4 is finished, but i only managed to add a few rooms before the map maxed out. So i dont know if it's worth publishing it at all. As of today i dont have any plans of publishing it but who knows in the future.