I think we will have Samurai class as an R9 Hidden class for 2H Swords and Spears. It would make sense considering we have Shinobi, and the current 2H Sword class is Doppel (a Mercenary class) and Spear classes are Dragoon and Lancer, both known for their prowess on the battlefields.
Then, during R10 if someone has both Shinobi and Samurai classes, they can go the Hidden class Ronin.
These are just my predictions for the future :3