High School Musical 3: Senior Year may not hit theaters until October - but fans can get their first look at the blockbuster when its trailer will premieres this Sunday at 7:55 p.m. ET/PT on the Disney Channel.

"We're paying homage to the fans by debuting our first look on the very network that launched the franchise," said Mark Zoradi, president, Walt Disney Motion Pictures Group.

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The entire cast of High School Musical 3 - Zac Efron, Vanessa Hudgens, Ashley Tisdale, Lucas Grabeel, Monique Coleman and Corbin Bleu - appeared on ABC's Good Morning America earlier today.

For his (hot!) part, Efron talked about coming into rehearsals a few weeks late because he was busy shooting another movie, 17 Again. He said couldn't keep up with girlfriend Vanessa Hudgens; we assume he meant on the dance floor:

Posted in: High School Musical

As we stated with the movie poster for High School Musical 3: Senior Year, this production is becoming more and more real by the day.

Now, the main players in the upcoming movie have gathered for a press conference to discuss the production. The event took place at East High School in Salt Lake City, Utah on Friday. And you can check it out NOW.

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This summer, Nick Lachey will host a reality show on ABC seeking a newcomer to be "a part of High School Musical history," as a network representative described the series.

It's tentatively titled High School Musical: Summer Session and - shockingly - the auditions for the next Zac Efron, Ashley Tisdale and Vanessa Hudgens recorded a turnout larger than the size of Lachey's ex-wife's breasts.

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Every time he thinks he's out, reality TV pulls Nick Lachey back in.

This summer, the former Newlyweds and Clash of the Choirs star will host a reality show on ABC. Its aim? To find the next Zac Efron or Vanessa Hudgens; i.e. a newcomer to be "a part of High School Musical history," as a network rep described it.

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High School Musical Quotes

Everything's been stepped up a few notches, all the dances, and I think the songs are pretty catchy this time around. And it's our senior year, so we've got graduation and prom to look forward to. All fun things to have in a movie.

Zac Efron [on High School Musical 3]

You never know with teenage girls. It's funny. But they're always, most of the time they're pretty respectful, and I love 'em. I'm very grateful.

Zac Efron