Pues, al principio yo creía que no faltaba nada, pero metiendome en DVDCompare y comparando, parece que falta bastante contenido, aunque nos han dejado practicamente el documental mas gordo e importante, al menos. Me extrañaba ya de base que Disney metiese todos los extras.. Pero os adelanto el resumen; no os deshagais de la edición de 2010. No solo por los extras que falten, si no por las ediciones extendidas.

Extras nuevos
Extras de la edición de 2010 presentes en el disco 2023
Extras de la edición de 2010 no presentes en el disco 2023

DISCO DE EXTRAS 2023

"Memories from Avatar" featurette (21:20)
"Avatar: A Look Back" featurette (10:03)
"Capturing Avatar" documentary (98:25)
- Part One (27:07)
- Part Two (27:18)
- Part Three (24:07)
- Part Four (19:52)
Featurettes
- "Sculpting Avatar" (3:46)
- "Creating the Banshee" (9:51)
- "Creating the Thanator" (3:20)
- "The AMP Suit" (4:31)
- "Flying Vehicles" (5:13)
- "Na’vi Costumes" (4:14)
- "Speaking Na’vi" (6:37)
- "Pandora Flora" (5:40)
- "Stunts" (5:14)
- "Performance Capture" (6:32)
- "Virtual Camera" (3:21)
- "The 3D Fusion Camera" (3:43)
- "The Simul-Cam" (2:18)
- "Editing Avatar" (6:59)
- "Scoring Avatar" (6:06)
- "Sound Design" (8:50)
- "The Haka: The Spirit of New Zealand" (5:17)

2010:

DISC ONE
* The Film - Theatrical Cut (161:24)
* The Film - Special Edition (170:34)
* The Film - Collector’s Extended Edition (178:09)
"Direct Access to New/Additional Scenes" feature
- Special Edition Re-Release
-- Scene 39: "Herd" (0:43)
-- Scenes 44-45: "The Schoolhouse" (1:51)
-- Scene 60: "Purple Moss" (0:26)
-- Scene 64 Alt 1: "I Don't Even Know Your Name" (1:18)
-- Scene 81J: "What Does Hold Them Up ?" (0:48)
-- Scenes 102, 105: "Extended Montage" (1:28)
-- Scene 112: "Neytiri's Flyby" (0:36)
-- Scene 121 Alt 1: "Sturmbeest Hunt" (1:55)
-- Scene 151: "Extended Love Scene" (1:34)
-- Scenes 174 - 176: "Drums Of War" (1:25)
-- Scene 276: Tsu'tey's Fall" (0:46)
-- Scene 282: "Sturmbeest Attack" (0:48)
-- Scene 332: "Extended Thanator Fight" (0:19)
-- Scene 348: "The Last Shadow" (2:41)
- Extended Collector's Cut
-- Scenes 2-19: "Earth" (10:16)
-- Scene 39: "Herd" (0:43)
-- Scenes 44-45: "The Schoolhouse" (1:51)
-- Scene 60: "Purple Moss" (0:26)
-- Scene 64 Alt 1: "I Don't Even Know Your Name" (1:18)
-- Scene 69A: "Sylwanin" (0:49)
-- Scene 81J: "What Does Hold Them Up ?" (0:48)
-- Scenes 102, 105, 106, 109: "Alternate Montage With Grace's Story" (5:39)
-- Scene 112: "Neytiri's Flyby" (0:36)
-- Scene 121 Alt 1: "Sturmbeest Hunt" (1:55)
-- Scene 151: "Extended Love Scene" (1:34)
-- Scenes 174 - 176: "Drums Of War" (1:25)
-- Scene 178: "They Bulldozed A Sacred Site" (0:45)
-- Scene 276: Tsu'tey's Fall" (0:46)
-- Scene 282: "Sturmbeest Attack" (0:48)
-- Scene 332: "Extended Thanator Fight" (0:19)
-- Scene 348: "The Last Shadow" (2:41)

DISC TWO
Deleted Scenes (67:51)
- User's Guide For Viewing Avatar Scenes With Unfinished Shots (03:12 Min.)
- Scene 19: "Stingbat Attack" (01:29 Min.)
- Scene 20: "Pandora Rules" (02:39 Min.)
- Scene 21: "Jake Meets Norm (First Cut)" (00:50 Min.)
- Scene 26: "Jake Sees Decanted Avatars" (00:39 Min.)
- Scene 30: "Norm Is A Living God" (00:43 Min.)
- Scene 35A: "Breakfast With The Scientists" (01:02 Min.)
- Scenes 36A - 37: "You're In My World Now" (02:39 Min.)
- Scene 64: "Grandma's Teylu" (01:54 Min.)
- Scene 79: "Pied Piper" (01:15 Min.)
- Scenes 81B-D: "Going To The Mountains" (02:09 Min.)
- Scene 81K: "Interspecies Booty Call" (01:16 Min.)
- Scene 91: "Norm's Attitude Improves" (01:06 Min.)
- Scenes 93A - 98: "Learning Montage Section" (Early Cut) (03:04 Min.)
- Scene C120A: "We're Buying Time" (02:04 Min.)
- Scenes 122 - 123: "Hunt Festival" (04:50 Min.)
- Scene 131: "Driving Range" (02:12 Min.)
- Scenes 131A - 148: "The Dreamhunt" (10:39 Min.)
- Scenes 164 - 172: "The Challenge" (06:16 Min.)
- Scenes 174 - 178: "The Drums Of War" (Full Version) (03:32 Min.)
- Scenes 209 - 211: "Escape" (03:40 Min.)
- Scene 224A: "The Eye Of Eywa" (01:49 Min.)
- Scene 232: "You're A Long Way From Earth" (02:06 Min.)
- Scenes 235 - 236: "Battle Camp" (02:17 Min.)
- Scene 248: "Kick Some Blue Ass" (01:23 Min.)
- Scene 277: "Wainfleet Kills Norm" (00:59 Min.)
- Scene 287: "Neytiri Kills Wainfleet" (Alt Wainfleet Death) (0:48)
- Scenes 288 - 327: "The Avatars Attack" (2:56)
- Scenes 350 - 351: "New Life" (1:25)
"Capturing Avatar" documentary (with Play All) (98:26)
- Part One (27:07)
- Part Two (27:18)
- Part Three (24:07)
- Part Four (19:52)
"A Message from Pandora" featurette (20:12)
"Production Materials" featurettes (with Play All) (84:25)
- The 2006 Art Reel (17:20)
- Brother Termite Test (1:57)
- The ILM Prototype
-- with Motion Capture Reference (0:42)
-- without Motion Capture Reference (0:44)
- Screen Test - Sam Worthington (Raw Footage) (6:19)
- Screen Test - Zoe Saldana (Raw Footage) (4:12)
- Zoe's Life Cast (Raw Footage) (2:22)
- James Cameron Speech: Beginning of Live Action Filming (Raw Footage) (5:25)
- ILM VFX Progression (2:37)
- Framestore VFX Progression (3:16)
- [Hydrau'lx] VFX Progression (2:04)
- Hybride VFX Progression (1:52)
- Prime Focus VFX Progression (2:56)
- Look Effects, Inc. VFX Progression (0:51)
- Crew Film: The Volume (31:41)

DISC THREE
"Scene Deconstruction" documentary (Final with Picture-In-Picture Reference / Template / Capture multi-angles) (65:21)
Featurettes
- "Sculpting Avatar" (3:46)
- "Creating the Banshee" (9:51)
- "Creating the Thanator" (3:20)
- "The Amp Suit" (4:31)
- "Flying Vehicles" (5:13)
- "Na'vi Costumes" (4:14)
- "Speaking Na'vi" (6:37)
- "Pandora Flora" (5:40)
- "Stunts" (5:14)
- "Performance Capture" (6:32)
- "Virtual Camera" (~3min)
- "The 3D Fusion Camera" (3:43)
- "The Simul-Cam" (2:18)
- "Editing Avatar" (6:59)
- "Scoring Avatar" (6:06)
- "Sound Design" (8:50)
- "The Haka: The Spirit of New Zealand" (5:17)[/COLOR]
"Avatar Archives"
- Theatrical trailer (3:32)
- Teaser trailer (2:06)
- "Avatar: The Original Scriptment" notes
- "Avatar: Screenplay by James Cameron" notes
- "Pandorapedia" notes (449 pages)
- "Avatar: The Songs" notes
"The Art of Avatar" picture galleries
- "The World of Pandora"
- "The Creatures"
- "Pandora Flora"
- "Pandora Bioluminescence"
- "The Na'vi"
- "The Avatars"
- "Maquettes"
- "Na'vi Weapons"
- "Na'vi Props"
- "Na'vi Musical Instruments"
- "RDA Designs"
- "Flying Vehicles"
- "AMP Suit"
- "Human Weapons"
- "Land Vehicles"