Had a look at what the Italian Dynit release was offered against the Japanese BD-Box. Dynit claims to have more than what's mentioned so below ain't final.
This list is based on the Japanese BD-Box list with the highlighted ones mentioned in the Dynit listing.
So my assumption from this is that everything except the live-action Episode 26 extras are probably going to be included in the western releases.
This list is based on the Japanese BD-Box list with the highlighted ones mentioned in the Dynit listing.
BD-BOX Discs 1-5 [Neon Genesis Evangelion TV Series, Episodes 1-26]:
- 30-second next-episode previews (eps. 1-20)
- Teaser, trailer, TV spot
- Trailer, TV spot
- 5.1 surround original 22 track OST version by Anno (from 2003 DVD)
- Musunde Hiraite: First ever full-size compilation of musical tracks that appeared on Episode 26 "Magokoro o, kimi ni," based on raw recording
- No on-disc extras mentioned.
- Home Video version of Episode 25 "Air"
- Included in LaserDisc/VHS release 'Neon Genesis Evangelion Genesis 0:13'
- Home Video version of Episode 26 "Magokoro o, kimi ni"
- Included in LaserDisc/VHS release 'Neon Genesis Evangelion Genesis 0:14'
- Clean Opening Sequence
- Clean Closing Sequence
- Image board collection
- A collection of image boards and design sheets drawn during the television series' planning stages, set to the original soundtrack
- (first featured in 'Neon Genesis Evangelion Genesis 0:1' LaserDisc and videotape's special bonus extras)
- Neon Genesis Evangelion Genesis 0:0 In the Beginning Special Preview
- Promo video released ahead of the laser disc and VHS release
- Neon Genesis Evangelion Genesis 0:0' The Light From the Darkness
- Special appreciation video released with the Neon Genesis Evangelion: Death & Rebirth VHS
- Episode 26 live-action segments' special rush print
- Live-action segments of "Magokoro o, kimi ni" edited personally by chief director Hideaki Anno in accordance with the script
- Episode 26 live-action segments' on-set video
- Making-of footage from the filming of the live action segments of "Magokoro o, kimi ni," newly edited (Filming: Hideaki Anno, others)
- Episode 26, alternate last scene
- A version of the last scene with Asuka with a different script than the final version, made during production.
- TV spot collection:
- Neon Genesis Evangelion 15-second television commercial
- Neon Genesis Evangelion 30-second television commercial
- Sega Saturn game Neon Genesis Evangelion (SEGA)
- Monthly Newtype March 1996 issue (Kadokawa Shoten)
- Shōnen Ace April 1996 issue (Kadokawa Shoten)
- Neon Genesis Evangelion Air/Magokoro o, kimi ni TV spot, offline edited version A
- Neon Genesis Evangelion Air/Magokoro o, kimi ni TV spot, offline edited version B
- Music video collection:
- Full size opening "Cruel Angel's Thesis"
- Full size ending "Fly Me to the Moon"
- "Tamashii no Refrain" Yoko Takahashi
- "Thanatos - If I Can't Be Yours" Loren & Mash
- "Armageddon" Shiro Sagisu
- "Tengoku no Kioku" Megumi Hayashibara
- * Music videos edited by TV series assistant director Masayuki
- Neon Genesis Evangelion Blu-ray Box promotional video
- Episode rush prints used for the dialogue recording and sound dubbing
- Episode 9 "Shunkan, kokoro, kasanete"
- Episode 15 "Uso to chinmoku"
- Episode 18 "Inochi no sentaku o"
- Episode 19 "Otoko no tatakai"
- Episode 20 "Kokoro no katachi, hito no katachi"
- Episode 21 "NERV, tanjou"
- Episode 22 "Semete, hito rashiku"
- Episode 23 "Namida"
- Episode 24 "Saigo no shito"
- Episode 25 "Owaru sekai"
- Last episode "Sekai no chuushin de ai wo sakenda mono"
- Evangelion: Rebirth
- Episode 25: "Air" (partial)
- *Partially finished versions of the episodes used during the dialogue recording and sound dubbing process (first included in the 2003 DVD-BOX video content)
OLTRE 120 minuti di contenuti extra:
- Episodi 25esimo e 26esimo in versione home-video (lingua originale con sottotitoli italiani)
- NEON GENESIS EVANGELION: Genesis 0:0 IN THE BEGINNING (documentario di presentazione dell’opera con interviste allo staff)
- NEON GENESIS EVANGELION: Genesis 0:0' THE LIGHT FROM DARKNESS (documentario con interviste ai doppiatori giapponesi, anticipazioni e molto altro)
- Rush video per indicare le durate ad uso di doppiaggio e sonorizzazione
- Colonna sonora originale in versione surround 5.1ch (22 tracce selezionate dal regista Hideaki Anno)
- Registrazioni audio dei provini dei doppiatori giapponesi
- E molto altro!