Well, some will only get to senior B's instead of GP. But anyway, who is likely to move from juniors to seniors next season internationally?
MEN- Possibly Joshua Farris, Jason Brown, and Yan Han but not definitely. Tim Dolensky and Philip Warren are aging out. I believe Artur Dmitriev Jr., Liam Firus, and Ryuichi Kihara are also. Zhan Bush will be at Jr. Worlds but already was doing senior B's this year so I imagine he'll be on the GP series.
LADIES- Possibly Polina Shelepen and Samantha Cesario, and maybe Julia Lipnitskaya. It's probably about time for Vanessa Lam, Risa Shoji, Zijun Li, and Polina Korobeinikova to think about moving up also. Not sure about Gracie Gold's plans, she has only done 1 JGP event so far.
PAIRS- I haven't really been keeping track except I do know that Duarte/Grafton are aging out and Sui/Han have been doing both senior and junior. Are Davankova/Deputat and Petaikina/Kurduykov old enough for senior GP?