Almost all of the main characters on Fox's Glee are excited about something in a new photo from the series finale, but what are they so happy about?

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The Glee Twitter account posted a photo Thursday from the two-hour series finale, which is set to air on Friday. The photo features almost all of the characters packing a living room and looking at something in the distance, cheering. Characters include Artie (Kevin McHale), Tina (Jenna Ushkowitz), Mercedes (Amber Riley), Kurt (Chris Colfer) and Blaine (Darren Criss) as well as several members of the younger generation of McKinley High classmates.

Based on the overall photo is looks like they are cheering about something that happens on television. Considering one person is curiously missing from this reunion, Rachel (Lea Michele), it suggests that they might be cheering about something that is happening to her.

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Many Glee fans speculated in reply to the photo that Rachel might be winning a Tony, and her classmates are celebrating. This is certainly possible considering Jesse St. James (guest star Jonathan Groff) returned this season to tell Rachel to follow her Broadway dreams. After all, the final episode is titled Dreams Come True.

The show is reportedly flash forwarding five years into the future, so it's possible that Rachel will indeed win a Tony in 2020.

The two-hour Glee series finale is slated to begin at 8 p.m. ET/PT on Fox, lasting until 10 p.m.

Tags: Glee television fox