Last week, it was announced that Stranger Things breakout star Millie Bobby Brown will return as Eleven in Stranger Things Season 2, news that was confirmed a few days later when the first cast photo debuted. While all of the other young stars had been confirmed to return months ago, Netflix wouldn't say whether or not Millie Bobby Brown was returning back. During a recent Q&A, executive producer Shawn Levy revealed that they wanted to reveal the news that she was coming back through the cast photo, but it leaked early because Millie Bobby Brown was seen trick r treating in Atlanta. Here's what Shawn Levy had to say about the leak below.

"We are filming in Atlanta again. I feel like that's how the Millie Brown thing leaked because someone saw her trick r treating in Atlanta. I was so bummed about that because Netflix had this really clever idea of taking a picture at our table read last week and posting it upside down, which is what we did. But then like two days before our clever idea got to debut, a bunch of places were reporting that Millie was gonna be a part of Season 2."

Yesterday, we reported that three new cast members have signed on for Stranger Things Season 2, with Sean Astin, Paul Reiser, and Linnea Berthelsen joining newcomers Dacre Montgomery and Sadie Sink. Linnea Berthelsen is playing a "damaged" young girl who is affected by the supernatural events in Season 1, while Sean Astin is playing a local Radio Shack manager and Paul Reiser is playing a Department of Energy member tasked with "cleaning up" after the events of Season 1. Shawn Levy spoke with Collider, revealing that the returning characters are striving to return to normalcy, although that may not be possible. He also added several of the new characters will be fan favorites, although he wouldn't clarify how much time has passed between Season 1 and Season 2.

"I'm not gonna say how much time has gone by. It is not the next day, I'll say that. And there are several new characters who I think several of them are going to be new fan-favorites because they're great, great new characters. But we are definitely sticking primarily with our core group, and what is different, how are they changed from the experience of last season... maybe 'normal' is never possible again. Will Byers was in that Upside Down for a while. So Season 2 is about this determined desire to return to normalcy in Hawkins, in the Byers family, in that group of friends, and it's the struggle to reclaim normalcy and maybe the impossibility of it."

Shawn Levy also added that Netflix essentially teased the Stranger Things Season 2 renewal before it actually happened, and that he will return to direct two more episodes. The director/producer revealed that he directed the third and fourth episodes to give the Duffer Brothers a break from directing, so they could write the scripts for the back half of the first season. It seems they'll be following the same formula for Season 2 as well, according to Shawn Levy.

"Yes, we are a little superstitious so just like last year, they're doing 1 and 2, I'm going in and doing 3 and 4. So the first four are gonna kick off exactly the same as last time... I am going to start prepping right around Thanksgiving and I'll be filming my episodes through December and January."

While the show has been confirmed to return at some point next year, Shawn Levy wouldn't offer an exact premiere date quite yet. It's possible that the show may return around the same time frame, mid-July, as the first season, but nothing is set in stone yet. Here's what Shawn Levy had to say about the possible Season 2 premiere date.

"That I can't say. I do have a sense of it. It was promised when we announced that we were picked up for Season 2 and we gave those chapter headings, I believe it ended with 'Coming in 2017' and that much is true. You can do a little bit of math, we're not magicians so there's no way it launches in Spring since I just admitted we started filming today, and we're doing nine."

Even though filming just started yesterday on Season 2, the Duffer Brothers have reportedly already started thinking ahead to Season 3. Netflix hasn't even issued a Season 3 renewal yet, but the filmmakers want to be prepared, just in case. Here's what Shawn Levy had to say about why the Duffer's are already thinking Season 3.

"We are not gonna be caught off guard and we don't wanna be making stuff up like the day before we have to write it and make it, so we are definitely optimistic and we have started thinking ahead."

Stranger Things Season 2 will be comprised of nine episodes, one more than the eight-episode first season, and it has already been confirmed that the show will be set in the year 1984. It has already been revealed that the episode titles are Madmax, The Boy Who Came Back To Life, The Pumpkin Patch, The Palace, The Storm, The Pollywog, The Secret Cabin, The Brain and The Lost Brother. Hopefully we'll get more details soon about Stranger Things Season 2 now that filming is under way.