According to Siliconera, Level 5 recently trademarked "Professor Layton and the Unwound Future," which seems to correspond with the Japanese name of the third puzzle-rich Professor Layton game, Professor Layton and the Final Time Travel. This is just ... this is so frustrating. We've told Layton over and over again: When you're tying up the future, you've got to use a square knot. These types of problems are best solved with prevention, sir.
Even if this particular title doesn't match up exactly with the Japanese original, the time travel theme seems to feature in both titles. Perhaps Layton will explore his own past, and we'll finally get to learn why he wears such a ridiculously tall hat. That's really the greatest puzzle of all, isn't it?