I have oredered The boxset from Movietyme.com.
I have a feeling that the region 1 dvds have DTS sound.
Got this from Amazon.com
Available subtitles: English, Spanish, French
Available Audio Tracks: English (DTS 5.1), English (Dolby Digital 5.1), French
Commentary by director Tim Burton on Batman and Batman Returns
Commentary by director Joel Schumacher on Batman Forever and Batman & Robin
Includes Batman (1989), Batman Returns (1992), Batman Forever (1995), and Batman & Robin (1997)
On the Set with Bob Kane
Legends of the Dark Knight: The History of Batman The Batman comic book saga as reinvented and reinterpreted over nearly seven decades
The Bat, the Cat and the Penguin Cast and crew members recall the making of the equally spectacular sequel
Additional Scenes
Riddle Me This: Why is Batman Forever? How a new director and cast created a new version of Gothams classic good and bad guys
Shadows of the Bat: The Cinematic Saga of the Dark Knight Parts 1-6: The Road to Gotham City, The Gathering Storm, The Legend Reborn, The Dark Side of the Knight, Reinventing a Hero, Batman Unbound
Beyond Batman Documentary Gallery:
Visualizing Gotham: The Production Design of Batman
Building the Batmobile
Those Wonderful Toys: The Props and Gadgets of Batman
Designing the Batsuit
From Jack to the Joker
Nocturnal Overtures: The Music of Batman
Gotham City Revisited: The Production Design of Batman Returns
Sleek, Sexy and Sinister: The Costumes of Batman Returns
Making up the Penguin
Assembling the Arctic Army
Bats, Mattes and Dark Nights: The Visual Effects of Batman
Out of the Shadows: The Production Design of Batman Forever
The Many Faces of Gotham City
Knight Moves: The Stunts of Batman Forever
Imaging Forever: The Visual Effects of Batman Forever
Scoring Forever: The Music of Batman Forever
Kiss from a Rose Music Video by Seal
The Heroes and The Villains Profile Galleries
Bigger, Bolder, Brighter: The Production Design of Batman & Robin
Maximum Overdrive: The Vehicles of Batman & Robin
Dressed to Thrill: The Costumes of Batman & Robin
Frozen Freaks and Femme Fatales: The Makeup of Batman & Robin
Freeze Frame: The Visual Effects of Batman & Robin
Music Videos:Batdance, Partyman, and Scandalous by Prince, Face to Face by Siouxsie and the Banshees, The End is the Beginning is the End by the Smashing Pumpkins, Foolish Games by Jewel, Gotham City by R. Kelly, Look into My Eyes by Bone Thugs-N-Harmony
Batman: The Complete Robin Storyboard Sequence
The Heroes and The Villains Profile Galleries
New digital transfers with Both 5.1 Dolby and DTS Surround
Theatrical trailers
Number of discs: 8