[Sunred]

So in the image ShinGi has discovered, it says HoOh soldier is a "new Red appears" and Shishi Red Orion as "ultimate power" as well as "the power of 9 combined!".
This confirms pretty much that Shishi Red Orion is the Abare Max of the show.
And HoOh Soldier feels like an homage to Time Fire from the looks of it but that is just me.

And here is the marketing/merch schedules for the toys:
April: Ryu Commander, Koguma Skyblue
May: Ryuteioh
June: Hikari Kyutama
July: HoOh Soldier and Gigant HoOh
August: Cerberus Voyager
September: Saiko(best) Kyutama and Shishi Red Orion

Also an Ohguma Kyutama campaign will begin starting April 29th where purchasers of certain merch will get it.
It says if you buy two out of the four listed below you can get it:
Kyurenoh
Ryuteioh set
Koguma Voyager & Ohguma Voyager
Ryu Voyager