Tina (Jenna Ushkowitz) might be written out of Glee as the Fox series begins preparations on its sixth and final season.

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Ushkowitz spoke with E! Online during the taping of Glee's 100th episode and revealed that her character's future was uncertain. Tina will be graduating from McKinley High very soon. When E! Online reporter Kristin Dos Santos asked Uskowitz if she was moving forward with Glee in season 6, the actress was hesitant and uncertain.

"I'm not really sure. It's a little bit gray right now," Ushkowitz admitted. "The upcoming episodes sort of give a good amount of information. Either way, this has been the most amazing experience ... If I walked away today, I would be sad but extremely happy that i had the experience and if I walk away at the end of season 6 I'd feel the same way."

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As for which Glee cast members are expected to return for the final season of the show, fans should expect Lea Michele (who plays Rachel), Chris Colfer (Kurt) and Darren Criss (Blaine) to stay on through the end of Glee, according to E! Online.

Additionally, Naya Rivera (Santana) will not be featured in a few episodes though she will be back with "major story arcs" in New York City, the new central location of the show.

Glee is set to air its 100th episode on Tuesday, March 18.

Glee season 5 airs Tuesdays at 8 p.m. on Fox.

Watch the promo for the next episode of Glee below:

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