This Pikachu balloon is fairly new. So I wouldn't think they'd wanna stash this one that soon, but you never know. Personally I think if they are going for a new balloon it would be in 2021 for the 25th Pokémon Anniversary. Pikachu is #25 after all.

Still either way I'm always super excited to see Pikachu take flight again! I'm still so glad I got to see it in all it's glory the year before rather than they hear the ears were deflated.