In addition to TFC Toys working on a Not-Devastator Hercules Exgraver, the third party custom shop seems to be working on a new combiner based on the Dinobots, according to images posted on the ACToys board.
The images appear to be very early design renders of what appear to be adaptations of the Dinobots, showing a dinosaur version of Grimlock, some early transformation ideas of other Dinobots.
According to a post by Cheem the Rup at Full Metal Hero, the name of the combiner is tentatively "The Beast."