I have my doubts that they will do anything really "anniversary" like this season. Perhaps a throwback to the older animal series (you know you'd all flip if they had some sort of Gaoranger throwback zord). But seeing as even Ninninger had throwbacks to Hurricanger and Kakuranger, I don't see any Gokaiger-level anniversary celebration. I think we'd see that for 50 years, if the show makes it that far.

I think if it's nothing big number like 50 we might just get the return of current season vs super sentai again

I can kind of imagine something like that combined with the triple dinosaur teamup, where the rangers they get belonged to animal teams.

I guarantee this factored into Toei and Bandai's decision making. Since there are SO MANY animal-themed Sentai teams, having that pool of teams to draw from (like Ninninger draws from past Toei Ninja Heroes) during an anniversary year is a good way to honor the history of franchise in a somewhat organic way.

Hopes!

I'm hoping for an idea like Kickback suggested might happen in his post. A throwback design to Gaoranger, or maybe even Liveman but that might be hoping to much. I would love if they did another Jetman, Liveman, thing where their animals are animal-themed assault vehicles. And no, not go-Busters. Thank you.
But I also hope that they do Gaoranger's aux'mech thing to. Where animals become new arms and legs and such. That'd be awesome to have again for when this comes here for Zord Builder.

Dough-butts-ooh Sentai Jew-oh-jerr.

:p

I would just hope there is something OOO in there.

I like animals well enough, and while I had hoped for a vehicle-based season, I didn't realise how long it was since we last had animals! That would be cool.

Fourze was the 40th anniversary for Kamen Rider and the anniversary aspect was pretty low key. This one might be similar. That's a good thing, in my opinion.

EDIT: dukemon has some rumours. Space might be part of it after all!

Oh! If true I'm down for that color selection. And space animals sounds pretty damn good to me too.