There's nothing official on the matter. There are no likely rumours either.

Though Munch's Exoddus is probably the logical step forwards for a Quintology game, it is unlikely to be done because:
-Munch's Oddysee was received very badly (at least by the fans). Another Munch game is likely to have negative connotations.
-Munch's Oddysee screwed up the story a lot - much will need to be altered from any original vision, which OWI might not be happy with.
-OWI have gravitated towards non-Quintology titles, but ones with more action, in recent years. Most people consider Stranger to be a better game than Munch's Oddysee, and even Lorne prefers it over all others.
-Since the release of Munch's Oddysee, many people, both gaming journalists, other developers, fans and general consumers have looked down upon OWI's decision to cast a one legged fish as the main character.

If we go back to the Quintology, I'd bet that it would be the 3rd hero's story. However, I think the Quintology will be reserved for film or much more advanced technology coupled with cheapter production costs.

Lorne Lanning has given no committment to any of the new consoles yet; it's possible an Oddworld game is released for any of the three.

What the hell are you talking about? MO was a great ****ing game.