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"Four original cast members are reportedly not returning as regulars for Glee&amp;#039;s fifth season. Heather Morris (Brittany), Mark Salling (Puck), Amber Riley (Mercedes) and Harry Shum Jr (Mike) may still make guest appearances in the new run, according to TVLine.   Puck, Mercedes and Mike all graduated at the end of season three, while Brittany got into MIT at the end of season four. Dianna Agron (Quinn), who had an infrequent presence in season four, is also said to be either absent or appearing as a guest star in the upcoming episodes. Glee was given a two-year pick-up by Fox in April, meaning it will continue into at least a fifth and sixth season. Season five begins on Fox in the US on Thursday, September 19. Watch a trailer for the last episode of the fourth run below:      "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/tv/glee/news/a494328/glee-season-5-heather-morris-mark-salling-not-returning-as-regulars/>