There has been a lot of rumors about the cast of upcoming season of "Teen Wolf". Although it has been confirmed that Dylan O' Brien will be returning and will be featured in the first episode of the show, yet same cannot be said about Meagan Tandy.

Tandy has been seen in a lot of shows lately. The most common ones are "UnREAL" and "Survivor's Remorse", which points to the fact that Tandy might not be free enough to appear in "Teen Wolves" season 6, reported Movie News Guide.

Meanwhile, although O'Brien's appearance was not confirmed due to his injury on the sets of "Maze Runner: The Death Cure," yet Melissa Ponzio, who plays Melissa McCall on screen, confirmed his appearance.

Ponzio took to Twitter to answer fans' questions about the opening season of "Teen Wolf" season 6. While replying to a fan about O'Brien's recovery, and the filming of the show, Ponzio mentioned, "We were in production and shooting before his accident. That's how :)"

The actress also mentioned that "Teen Wolf" began filming before Dylan was injured, according to International Business Times.

She said, "We started shooting in early feb[February]. The only thing we care about is him healing and feeling better every day. Work can wait."

Previously the show creator Jeff Davis had also confirmed that Stiles is not being replaced. He told Creative 132."We aren't replacing Stiles. Dylan O'Brien will be back to film soon [but] he can't do any stunts."

"We're talking with Wes Ball, the producer of 'The Maze Runner,' [and] we hope to get him back on 'Teen Wolf' to film, while being injured," Davis continued. "But the thing is he wants to film. He's in perfect condition, but he's just not doing fine enough to do any stunts."

Additionally, Davis has also teased viewers about a possible delayed return date for season 6, and the future of season 7 for the 2017 - 2018 slot.

"Teen Wolf" season 6 is slated to air this fall on MTV. The premiere date is yet to be announced, and viewers need to stay tuned to news to stay updated.