Originally it seems like the plan was to give Yuba a rematch however Tomioka appears now to be moving back down in weight and will chase a shot at the main title.
From what we understand he and his team have decided that he will take part in a title eliminator bout in October, to get a shot at the title next year. Whilst it's a long end game it's clear that Tomioka doesn't have the power to really compete at 135lbs going forward, and that, for now, 130lbs is better suited to his body. The long window between now and October seems to have been viewed as an advantage for Tomioka who will get time to work on his physical strength and game plans for for his eliminator, and potential title fight.
Although it's unclear for now whether Yuba will be fighting for the vacant title later in the year, it does seem likely but hasn't yet been confirmed from the second generation fighter.
(Image courtesy of boxmob.jp)