In fact, I'm remembering now. The Fanfest slide that "New plans for Deep Dungeons"... It was an interesting way of writing, given that Pilgrim's Traverse still follows the same formula, I wouldn't consider it "new plans". Could this hint something regarding the old DDs?

Reality is that this may be just a fancy way of saying "we'll make a new Deep Dungeon" or just that this one has more novelty than EO lol.