'Glee' Season 4: Cast Expected To Return

The "Glee" cast will return for Season 4, but for how long?

According to The Hollywood Reporter, all 15 regular cast members -- Lea Michele, Cory Monteith, Chris Colfer, Matthew Morrison, Jane Lynch, Jayma Mays, Naya Rivera, Heather Morris, Kevin McHale, Darren Criss, Amber Riley, Jenna Ushkowitz, Dianna Agron, Mark Salling and Harry Shum Jr. -- will return to the Fox musical series. However, the episode count for each remains undetermined and should allow the cast to explore other projects.

THR reports Chord Overstreet is in talks to be added as a series regular. Overstreet joined the series during Season 2, left at the end of the season after being passed up for regular status and returned in a recurring role during Season 3.

Series co-creator Ryan Murphy said he extended invites to the entire cast to return. "We've become like a family," he told Vulture. "I said to them anybody who wants to stay on the show will stay on the show. I asked all of them, 'What do you want to do? What are you interested in doing?'"

Re-live "Glee" Season 3 by clicking through the slideshow below.

Glee Episode Stills