Fans may need to wait many months until the premiere of Glee Season 6, but at least we can now confirm that they'll be seeing a few familiar faces on their small screen once the FOX hit does return.

According to E! News, Jenna Ushkowitz, Jayma Mays, Mark Salling and Dianna Agron are all booked to appear at least once over the final run of Glee episodes.

The network didn’t originally name any of this quartet when announcing the main names involved on the concluding season, but E! reports all will be back as guest stars.

Ushkowitz begins filming her role some time in the next week or two; Salling and Agron will shoot later this month; and Mays at a later date.

Glee Season 6 will jump forward in time and focus on Rachel, whose Hollywood dreams are shattered and who has returned to McKinley to salvage New Directions.

Lea Michele, therefore, will play a critical part, while Chris Colfer, Darren Criss, Dot-Marie Jones, Jane Lynch, Kevin McHale Matthew Morrison, Chord Overstreet and Amber Riley will also he featured.

We also know that Max Adler will reprise his role as Dave Karofsky… Blaine’s new boyfriend!

Glee will return to the Fox schedule in early 2015. Until then, you can always watch Glee online via TV Fanatic.

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Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.