http://www.toycollectors.com.au/2018tru07.jpg
Looking at the mixed deluxes in the pic Griffin posted, it does seem a shame that the POTP deluxes aren't Headmasters. These new ones have cross compatibility with the deluxe/voyagers long off the shelf, instead of the ones still on the racks. Would have thought it better for the third series to be both combiners and headmasters, really wrapping up the trilogy.