I'd assumed they would once it was revealed that they'd redone the visuals and everything. Also it wasn't officially released in NA, so they see it as a completely new game for the market. I think they would have charged $60 even without the demo.
I actually find this news to be incredibly encouraging, though. I didn't think Type-0 had a solid release date yet for North America, and assuming the FFXV demo doesn't come out too long after it, I didn't expect it to see it playable until E3 2015 at least.
I hope the Dragon Quest PS4 comes out in time.