You may recall a few months back, that a special Fresh Orange Lock Seed was offered as a magazine pack in bonus. As it turns out, this Fresh Orange lock will indeed allow Kamen Rider Gaim to use a new Fresh Orange Arms!
This arms is set to debut in the Kamen Rider Gaim Hyper Battle Video scheduled for release this spring. Much like previous Hyper Battle exclusive forms it most likely will not appear in the main show proper. Prime examples of this trend being Gattack Hyper, Fourze RocketDrill States, Wizard Falco Mantle, or OOO TakaToraGaru.
This image also teases the other arms changes from the special:
Ryugen: Pine Arms, Banana Arms, Melons Arms
Zangetsu: Mango Arms, Ichigo Arms, Budou Arms
Baron: Kiwi Arms, Melon Arms, Ichigo Arms