User blog comment:Thailog/Ep. 206 "Bloodlines" discussion/@comment-98.89.105.80-20120603142428

It was announced that there would be another time skip next seasons, but Greg said he wasn't going to give any spoilers on how long it was going to be. Maybe someone fixes Bart's time machine, but it malfunctions and sucks everyone(or some) into the wasteland-like future. From then on, they try and defeat whoever did this.

All I can think of x)