How so? Like the ones they've done before? The season jumps ahead a few years? That's what I'm expecting; I guess I'm saying it's not quite right still calling them "kids."
They could do something like X-Men: Days of Future Past, where the Earth has become a sort out Vecna hellish nightmare and they go back in time to fix it, maybe run into their younger selves, or around themselves, like the DS-9 episode Trials and Tribble-ations. It'd be a pretty sad knock-off plot device, and it'd be expensive for them to run an entire season like that.
Anyway, all I was saying that they're not kids anymore. I think it was the recent announcement of Millie Bobby Brown's marriage that really made me aware of how much time has passed. Season 1 first aired 8 years ago.