Also, do we think that design for Primal is maybe what he's gonna look like in POTP?
I don't really see why everyone keeps saying this. Hasbro products generally influence the media, not the other way around. Earth Wars Optimus is basically the cartoon/Masterpiece design. Star Saber as well. And Primal is a conglomeration of the influences as presented in the design collage Jalaguy reposted just now.
No matter how much Hasbro works with the Earth Wars team, I strongly doubt Hasbro's designers are staking all their ideas on a single mobile game.
I think Immortalis's suggestion was that the game developers might've had an early look at the POTP toy design, like how we technically first saw TR Soundwave through the game.