Will might not be totally OK
How did that smoke monster survive an entire season in the Upside Down? Schnapp, who plays Will, says he thinks the Mind Flayer still has a hold on his character. "I feel like it can't be [out of him]," he told THR. "There's this massive monster taking over all of Hawkins, and all you have to do is light a few fires and turn on a few heaters, and he's gone? It just doesn't make sense to me, really." (Same.)
But he should be able to relax (a little)
Sure, Will's still scarred by the Mind Flayer, but he's going to get a break in Season 3. "I feel like we really put Will through the wringer," Matt told THR. "We're not going to put Will through hell for a third season in a row," Levy added, in an interview with Glamour. "He'll be dealing with stuff, but he won’t be at rock bottom the way we forced the amazing Noah Schnapp to play."
Kali's coming back
Though Season 2's trip outside Hawkins became the most contentious episode by far, its focus, Kali, isn't going anywhere. "It feels weird to me that we wouldn't solve [Kali's] storyline," Matt said at Vulture Fest. "I would say chances are very high she comes back."
Love will still be in the air
The relationships -- Mike and Eleven, Max and Lucas -- you saw forming at the end of 2 will carry over to 3, according to Levy. At least for a little. "They're like 13- or 14-year-old kids, so what does romance mean at that stage of life?" he said at PaleyFest. "It can never be simple and stable relationships and there's fun to that instability."
There will also be more Steve-Dustin bromancing
Without a brother or a father figure, Dustin will keep looking for Steve to fill the void. "In Season 2, [their friendship] was all very cute and there was a funny factor to it because it was unexpected, but now that it is expected, I want to see them connect more and be more familiar with each other," Levy told Glamour. "I want them to have a connection like they’ve really had a connection for a year -- like they're brothers."