TakaraTomy have tweeted out a teaser silhouette, telling us that a new reveal is coming soon.
The image looks like the POTP Volcanicus, but has different kibble on the shoulders and at the back... so it could be the rumoured remould of the POTP Dinobots to homage the Dinoking combiner.
The writing on the image apparently says something like "Beast Warrior Returns"... which is just as vague as the image.
If this is another Japanese remoulded combiner team (after two sets of really expensive Seacons), it could end up being a collectors import by Hasbro, and be just as expensive.