Some of the characters may have left McKinley High and Ohio but practically none of Glee‘s regulars is leaving the show. Additionally, I’ve learned that Chord Overstreet is in talks to return next season, this time as a regular. Overstreet joined Glee in Season 2 as a recurring, left at the end of the season and then came back midway through Season 3.
At the end of last season, which saw several seniors from the New Directions glee club graduate, series co-creator Ryan Murphy extended an open invitation to all 15 regulars to return for Season 4. It appears that virtually all accepted it and are set to come back, though not everyone will be in every episode. Leading couple Lea Michele and Cory Monteith are among those likely to be in most if not all episodes. Also coming back are Matthew Morrison, Jane Lynch, Chris Colfer, Naya Rivera, Kevin McHale, Darren Criss, Amber Riley, Jenna Ushkowitz, Jayma Mays, Dianna Agron, Mark Salling, Harry Shum Jr and Heather Morris. Their workload will vary as the show once again will work to accommodate the large cast and make room for some new characters. (Glee has already booked Kate Hudson and Sarah Jessica Parker for multi-episode arcs.) In addition to storylines reasons, some cast members may have reduced presence on the show as they pursue other projects, including features, theater and music.