As far as I know, the only glee clubbers leaving are Finn Hudson, Rachel Berry, Kurt Hummel, and recently announced, Santana Lopez. The idea of having a spin-off did come up, so being off 'Glee' does not mean they have to remain out of work even though they will most likely be called onto a different T.V. show.
If you're talking about the recent On My Way episode, then no, she is not leaving.
Hopefully not
Chord Overstreet (Sam Evans) BUT HE RETURNS ON EPISODE 8 SEASON 3 THATS ALL
No. He is signed on all of season 3.
The 1st. Pilot
Rachel isn't leaving Glee, it was rumored that she would be sacked at the end of season 3 because of graduation but new interviews with Glee producers have said that she will return for season 3 and are waiting to see what pans out after that but it isn't likely she will be sacked.
Nope, Just taking a break to work on his new album(Pipe Dreams)
I don't think he's leaving for good. I think it's to add more drama in the show.
He's not leaving the show completely, but he won't be a series regular. He might appear in a few episodes in season 3.
http://www.fox.com/glee/
Glee withdrawal is when the hit TV show Glee is on a hiatus and the glee fans are feeling the effects of it.
Currently they have 4 albums: Glee Volume 1 Glee Volume 2 Glee Power of Madonna Glee Volume 3