I saw that, and Luke said something on his Facebook about not seeing the guys for a long time after the trip ended. Jon's probably in full-on Demons & Wizards writing mode, so the band must be taking another break. He tends to put a full stop on all touring activities when he's writing music, and the band has nothing scheduled from now through 2019 at least. With Demons being booked at Wacken and ProgPower USA, I think they may be trying to hit the European festivals next summer.
It's a good thing, since the first Demons album is so much better than the second, and I attribute that to him sitting down and writing those songs with Hansi, rather than sending files back and forth.