[EDIT] Short version of the interesting/new stuff as far as I’m concerned:

- Wang’s lost all her money by some point after ep 17.
- Marina’s song got on the radio because a soldier happened to hear it, decided to record it and sent it to a radio station.
- Lyle is a massive faggot and saw Anew’s gold eyes multiple times and noticed that they always got attacked a few hours after it happened, but he still NEVER SAID ANYTHING TO HIS COMRADES.
- When Revive is captured, Hiling decides that, once they’re done unifying the world, she’ll ask Ribbons to build a useless facility near the North Pole and have Revive demoted to a position there. (I would pay to see the scene of her imagining this in the SE)
- Anew didn’t shoot Feldt because Anew’s a female model and has an unconscious aversion to harming members of the same sex.
- Tieria honed combat, MS development and general battleship operation skills during the timeskip (hence why he’s a competent pilot for Ptolemy among other things)
- Nena gets sliced in half by the Regenant’s claws.
- Susano-o’s swords, Shiranui and Unryuu, were built with some components from Masurao’s beam sabres named Howard and Daryl {corrected because I’m not up on my gunpla box info}

[EDIT] Shot of the illustration advertising the final volume from 2ch via /m/:

Mmm, delicious Ribbons.

[EDIT] Speaking of Ribbons, oh god wat:

No I don’t know what it’s from, just saw it on one of the 2ch image upload sites. I’m scared.

From kouryakukan, updating as I go:

00 S2 Novel 4 Summary

{some bits of this are more paraphrased than directly translated; I’m only noting parts where I’m skipping sections/heavily abbreviating it}

It covers up until Setsuna and Bushido’s final battle.
The episode with Lyle and Anew has been drastically revised.
Nena’s death scene was made more gory.

{Info about the cover and illustrations, we’ve seen the front cover, back cover is Cheridum, the pinup is of Gadessa, Garazzo and Gadess and the backside of it is Lyle and Anew again}
Since it went on sale after the series ended, there isn’t much in the way of spoilers but there are many new episodes.
Mainly with respect to the emotional component.

P23 Prologue
Lyle and Anew

{through P29, just Lyle and Anew flirting, there’s a kiss scene, idk I’m gonna skim over most of their romance shit because I don’t really like either of them — check this post on the 00 LJ com if you’re interested in those bits, they kindly filled in the gaps caused by my laziness/character bias}

P29 Chapter 1
Marie’s turned into Souma again and has a scene with Saji.
Saji fails miserably at trying to get Souma to understand Al’s feelings about keeping her out of battle.
“Are you trying to rob me of my chance to express my anger and my grief!?”

P55
Ribbons and Regene’s discussion.
It’s clear that Wang Liu Mei’s assets have been depleted.

P61
Explains how Marina’s song got on the radio, apparently a soldier heard it, recorded it and sent it to a radio station

P62
A shower scene of Souma was added (but there’s no illustration)
She reflects on Sergei’s death and her hatred of Andrei.

P79
Lyle/Anew scene, she asks him about his family

P81
More Lyle/Anew, Anew’s eyes go gold, apparently it’s not the first time Lyle’s seen this happen and has realized that they always get attacked a few hours after it happens {ohmygod what a fucking idiot}

P86
Illustration of Saji and Setsuna

P91
Chapter 2

P111
Illustration of GN Archer’s battle

P123
Setsuna and Saji out in the 00 when Saji’s looking for Louise.

P127-8
Depiction of Hiling’s feelings.
She demonstrates her belligerent nature, baring her teeth with her eyes open wide. {I hate this kind of not-sentence that Japanese seems so fond of}

P140-8
Louise and Saji’s talk in the GN particles.

P149
Added scene depicting Andrei’s feelings.
“It’s not a joke! I still haven’t even called her by her first name!” {sorry, no context to make that make more sense}

P158
Tieria vs Revive; Revive’s captured by Seravee.

P171
Revive imagines Hiling snidely reporting his capture to Goodman.
In her stubborn mind, Hiling swore that once the world was unified, she’d ask Ribbons to build a useless facility somewhere near the North Pole and have that stuck-up man demoted [to a position there]. {Note: According to kouryakukan at least, Hiling does expressly use the word “man” in reference to Revive; also, lol Hiling}

P177
Chapter 3

P186-7
2 page spread. Lyle, Sumeragi and Tieria across from Revive. And Anew with a gun to Millena’s head.

P190
Anew’s rampaging through Ptolemy, pretty much the same as what we saw in the anime. Apparently she didn’t hurt Feldt because Anew was made female and had an unconscious dislike of hurting members of her sex.

P195
{blah, Lyle and Anew}

P208
{Lyle’s conflicted about shooting Anew}

P218
Regenant has a Gundam head inside it, but it’s not in the A-LAWS database {lol, wat}

P221
Tieria’s driving Ptolemy.
While in hiding, Tieria honed his combat and MS development abilities, as well as general battleship operation skills.

P234-9
Lyle vs Anew
{sentimental stuff, once again, I’m sorry if anyone is interested in this, but I just have no patience for this sort of thing especially where characters I’m not fond of are concerned}

P239-43
Tieria’s hyper burst mode and Arios being attacked.

P248-9
Two page spread of Cheridum with a gun turned on Gadess.

P251
Ilustration of Lyle prying open Gadess’s cockpit and Anew.

P254-6
Being hit by several of Regenant’s big particle beams, Tieria makes a pained face. Being electrocuted, he [describes] the sensation “It’s a pain that feels like my skin’s been covered in black powder that’s been ignited all at once.”

P257-63
{blah, Lyle and Anew both recognized that there was something missing in each other, Lyle angsts meh…}

P267
{more Lyle/Anew; GN particles something something}

P271
{Lyle and Anew in particle space, Lyle has a scar on his head from where he fell out of a tree when he was young and only Anew knows about it}

P272
Lyle’s feelings when the Gadess blows up.
{Lyle goes on with a “I was empty before I met you…” thing, it’s lame and goes exactly as you might imagine}

P276-81
Lyle beating on Setsuna while crying like a bitch.
Al and Souma were loitering around {er, idk, there’s a bunch of kana and I can’t quite figure out what words it breaks down into}
Setsuna thinks Lyle ought to hit him some more.

P283
Chapter 4

P284
After Anew’s death, Lyle locked himself in his room. Al and Souma work on their machines and Tieria’s on the bridge helping out with system restoration {thanks Lyle :D, you sure are useful in a crisis! Sorry, I’ll try to stop}

P289
Saji catches sight of Setsuna’s eyes glowing.

P291
Setsuna and the others’ boots are magnetic.

P295
Lyle points his gun at Setsuna’s back.
{Lyle angst}

P307
Illustration of Mister Bushido, Louise and Andrei

P309-10
Depiction of Setsuna’s awakening as an Innovator.
[The wound to his right shoulder was healing bit by bit for the first time]
[Setsuna was becoming aware that he himself was changing from the start]

Saji and dream-Lockon (Neil)’s words crossed Setsuna’s mind.
“I’m… changing. I wonder what the result will be.”

P317-28
{Nena kills Hong Long. Wang bitches about having to take the head-ship in her brother’s place}

P335-40
Bushido appears before Setsuna.

P342
Wang’s monologue:
“I’d sacrifice CB, the Innovators and even my own brother’s life to achieve change.”

P344-5
2 page spread; Nena and Wang and Throne Drei

P345
Wang killed by Nena

P349-60
Louise vs Nena
“The enemy MS (Regenent)’s red talons tore through Nena’s abdomen and destroyed her internal organs. She was sliced clear in half save for a few strands of muscle.”

P361-4
Louise rejoicing after killing Nena:
“I did it. I did it. I killed her.”
“The sensation from when the [my] talons {and something, nfc what ずむり is} thrust into her stomach is still on my hands.”
“I went as far as killing someone for revenge, I wonder if my parents would be proud.”
[Louise's world was changed]
[But, there was no love there]

P365-88
Setsuna vs Bushido

P365-66 Description of Susano-o’s weapons
In the left hand “Shiranui” and in the right “Unryuu” were the beam sabres from Masurao’s left and right hands respectively, which used the beam oscillators from Howard and Daryl’s beam sabers {;~; I’m touched!}

The beam oscillators for “Shiranui” in the left hand and “Unryuu” in the right came from Masurao’s left and right weapons, “Howard” and “Daryl” respectively. {thank you LJ for alerting me to my error!}

P366
Susano-o was equipped the ability to deploy a GN field, but didn’t really think he should use it.

P366
In the beginning of the battle, Setsuna was distracted by Louise vs Nena, but Bushido’s attacks didn’t make him turn around even once.
“Are you finally putting your all into this?”

P367
Susano-o illustration.

P368
Bushido’s monologue:
“I’ve already accumulated so many weapons I can’t even count them all.
To be precise, let me say it 182 times!” {umm… I think I may have something wrong in here, fucking Bushido speak}

P369-70
Bushido’s monologue goes on and on:
“I want to fight. I want to fight and win. Against a Gundam!
It’s fine if you’re an obstacle to my desires from the beginning to the end!
That’s where my sky is clear!
There isn’t a single cloud in that sky!
Even space too! (“space” is glossed “sky”)”

P372
Setsuna and Graham’s meeting in particle-space.

P376
Graham and Homer’s past.
Graham asked Homer:
“What I’m seeking is the hight that only a fighter can achieve.”

378
Bushido vs Setsuna
“I’ve lost!”
“Please, cut me down!”

P380
Bushido exited Susano-o’s cockpit because the emergency escape function was activated (the hatch opened on it’s own)

P381
Bushido’s feelings
[The enlightenment that was in my mind has vanished, and in it's place the feeling defeat rains down like rain from dark clouds and soaks deeply into his heart]
[It's not just swordsmanship, he feels like he's lost on a level even above that. He's tasting a strong sense of disgrace and defeat that he's never experienced before.]

P382
From Setsuna to Bushido.
“Fight to live.”

P383
Saji says to Setsuna:
“Setsuna…Thank you. I feel the same way.”

P384-8
Bushido’s feelings.

P387
Floating around the cockpit is the trusty sword he received from his teacher.

P388
“Fight to live”
Setsuna’s voice troubles Bushido.

P389 Epilogue
Regene’s monologue.

P392
In the instant the 00 Raiser struck the last blow against Susano-o, Setsuna unconsciously let loose his QBW.

P394-5
2 page spread preview of the next volume
Setsuna and Ribbons in normal suits. Reborns Gundam in the background.
Setsuna “This rebirth you’ve brought about… I’ll destroy it myself!”
This is probably the last volume covering the TV series.

But, since volume 4 was titled “Anew Return” Lyle and Anew were the focus…
There was absolutely no mention of Kati and Patrick….

DONE!