"Bolt, the latest film from Walt Disney Feature Animation, has been scheduled for three home video releases on March 24th. A single-disc DVD ($29.99 SRP) will include the all-new short Super Rhino. A 2-Disc Deluxe Edition DVD ($32.99 SRP) adds deleted scenes; the featurettes "Creating the World of Bolt", "Act, Speak! The Voices of Bolt", and "A New Breed of Director: A Filmmaker's Journey"; stars Miley Cyrus and John Travolta singing "I Thought I Lost You" in the studio; and a digital copy. Finally, for $39.99 SRP, you get the Blu-ray (with the exclusive Bolt's Be-Awesome Mission Game), the DVD, and the digital copy."
Source BTW, for those wondering about the digital copy, it's a version you can put on your computer and your iPod or other video player. I have one for WALL-E and they're really handy. It's great to wanna watch a movie and just be able to pop it open at my desk without having to go gt the disc.