So, about 2 hours ago, I read the news of some Team P0ison talking about a plan to expose all the members of LulzSec one by one, that was yesterday. I have been doing some digging since then, and apparently the dox were already released, some time today.

This is were I started: 
http://thedailyattack.com/2011/06/22/team-poison-pwnz-lulzsec/

Then I found this.
http://www.foxnews.com/scitech/2011/06/23/hacker-vs-hacker-group-races-police-to-expose-lulzsec/

TeaMp0isoN -- read, Team Poison -- is a group of professional hackers, publicly connected to the Palestinian-friendly "Mujahideen Hacking Unit" that defaced Facebook in December, and they're racing international police to pull back the sheets and expose LulzSec's identities.

The main targets would be Sabu, Kayla and Topiary.

Sabu, supposedly the leader, is the first victim.
http://pastebin.com/76TsPHeU  -- A log of clues used to trace him
http://pastebin.com/RbyJhv2J  -- Sabu's dox. While I was browsing pastebin, this one was uploaded, funny coincidence.
http://pastebin.com/YnuwarHX  -- Another one I found

It's quite an interesting read.

Some more: http://uk.ibtimes.com/articles/169147/20110624/lulzsec-lulz-security-team-poison-identities-hack-hackers-anonymous-ninja-reveal-anti-operation-ryan.htm

I don't know, it was interesting, hence why I'm posting this here.

What do you guys think? Could that REALLY be Sabu's information? What will happen now?

EDIT: I need to correct this, apparently it wasn't Team Poison but "The Jester" who revealed the information. And the third pastebin I linked to, is a letter from him. 
http://twitter.com/#!/th3j35t3r

Yah this is great, terrorist hackers targetting cyber terrorists. I wonder why a group linked to Islamic Extremists wants LulzSec taken down? I hope police and interpol can bring both groups to justice. Hopefully Team Poison slip up and LulzSec gets their identities out to the public as well!

Updated OP.

Also about that^, Team Poison said (in the website they defaced, read first link) they were doing this because LulzSec are "script kiddies", using pre made tools, and claiming to be underground hackers, when in fact they aren't, so they will reveal their identities to show them how it's done.

But as I'm now saying in the OP, looks like it was The Jester who got there first:
http://twitter.com/#!/th3j35t3r

Somehow I doubt that any group of people who punctuate their name like that are professions at anything except being twats. They sound like a bunch of 12-year-olds who think they're 1337 h4xx0rz because they found out how to change the wallpaper on the school computers.

This "th3j35t3r" fellow sounds like he's not much better.