Glee Season 6 Spoiler: Who's Not a Series Regular in New York?

Glee Season 6 Spoiler: Who's Not a Series Regular in New York?

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E! Online spoiled something major, and it's that at least one Glee series regular since the beginning won't be staying around full-time in New York in season 6.

...we can also tell you that at least one actor who has been a series since season the very beginning isn't expected to stay a regular for season six. This character is graduating from McKinley High, soon, and will be seen from time to time, but no longer as a full-time cast member.

Which McKinley graduate do you think it is?