Just recently, leaked rough sketches of OOO upcoming forms, Tajadoru Combo and Shauta Combo were leaked in the internet. To those who don't know what those Combos mean, Tajadoru Combo means Hawk, Peacock, Condor while Shauta Combo means Orca, Eel, Octopus. These combos are rumored to debut in the series proper early next year.
On the right is the rough sketch for Tajadoru Combo which consist Taka (Hawk), Kujaku (Peacock), Condor Core Medals. On the left is a blurred version of the suit while on the right is the rough concept sketch of the suit. Seeing the red eyes on Tajadoru Combo, I bet that this might be OOO's mid-season upgrade, kinda like with W FangJoker last year. Aside from that, the Kujaku Arm can turn into a bowgun, which allows OOO to insert six or seven Cell Medals. With it, he can deliver a powerful Scanning Charge attack.
On your left is the rough sketch for the orca head of the Shauta Combo, which consist of Shachi (Orca), Unagi (Eel), Tako (Octopus) Core Medals.
Gee, it kinda reminded of Mezool's fish head to be honest. It is rumored that this combo will give OOOs four legs... if he will do his Scanning Charge like the Batta legs in the Tatoba Combo finisher.
Take note, till actual scans of these forms will be released or toy scans, take this as a grain of salt. Remember the first design for W?
Special thanks to Gold Samurai for the post of the blurred Tajadoru and the concept art for Tajadoru and Shauta! Also, additional thanks to alternate-zer0 for the clarifications! Additional thanks to Gideon Burogu and JEFusion for the additional info!