On February 17, 2009 Walt Disney Home Entertainment will be releasing High School Musical 3: Senior Year –Extended Edition on Blu-ray and standard definition DVD.
Here are the DVD details
The 1-disc DVD version of High School Musical 3: Senior Year includes the theatrical version of the movie plus:
Cast Goodbyes
The 2-disc Extended Edition DVD, showcases the extended version of the film, plus:
Cast Goodbyes
Sing Along Feature
Bloopers
Deleted Scenes
It’s All in the Dress
Night of Nights
DisneyFile digital copy of the extended movie
The 3-disc Blu-ray Deluxe Extended Edition includes the extended version of the film, plus:
All of the bonus features from the DVD (above) including the DisneyFile digital copy of the extended movie, plus exclusive bonus features:
New Cast Profiles
Senior Awards
BD Live Experience (US only)
This deluxe set also includes a DVD copy of the extended movie.