The Midnight Factory release, despite being released by a relatively unknown brand, is probably the best version of the film, the special features can be found at the following link:
https://www.midnightfactory.it/film/day-of-the-dead-il-giorno-degli-zombi
The following is taken via Google translating their description:
"Disc Number: 2
Duration:
- Disc 1: 101 minutes (Excluding Extras) - Disc 2: 291 minutes Video: 1080p @ 23.98 1.78 Audio: Italian 5.1 DTS HD Master Audio, English 5.1 DTS HD Master Audio Subtitles: Italian
Extra:
- Disc 1:
Audio Commentary with the Special Effects Team (Greg Nicotero, Howard Berger, Everett Burrel and Mike Deak)
Audio Commentary with Romero, Tom Savini, Lori Cardille and Cletus Anderson Audio Commentary with Roger Avery Behind the Scenes: featurette Behind the Scenes: special effects with Tom Savini Teaser and Trailers
TV Spots
Photo gallery: Lobby Cards
- Disc 2:
"The End of the World: Zombie Day Legacy": Documentary
Photo Gallery: Behind the Scenes Photo Gallery: Locations Photo Gallery: Miscellaneous The Zombie Travel Journal Interview with George A. Romero at the 2008 International Film Festival Melbourne Joe of the Dead: Interview with actor Joe Pilato Underground: the mines of the day of the Zombies Spot of the Wampum mine
"The many Days of Day of the Dead": Documentary"