Here's the translation of an article published at SquareNet:

Square Enix: Official Site for the Square Enix Party
News of 01.06.2005 around 13:24

Today, Square Enix started an official site for the Square Enix party 2005.

- Link to the Official Site for the Square Enix Party 2005

As we already reported, this event will take place on July 30 and 31, 2005, in the Makuhari Messe in Tokyo. According to the site, the following titles will be presented there:

- Final Fantasy XII
- Kingdom Hearts 2
- Code Age Commanders
- Dragon Quest 2
- Dirge Of Cerberus - Final Fantasy VII
- Musashiden II: Blade Master
- Fullmetal Alchemist 3
- Grandia III
- Heavy Metal Thunder
- Final Fantasy XI
- EverQuest II
- Front Mission Online

Different mobile phone-services and mobile games should also be presented, along with a presentation of Final Fantasy VII Advent Children. Which mobile games will be offered is not yet known. However, it was mentioned earlier that a playable demo for Final Fantasy XII should be presented there.
Source: SquareNet

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Some further details from RPG Fan:

Square Enix today released first details regarding its previously announced private event titled Square Enix Party 2005 today. Scheduled to take place at the Makuhari Messe Japan Convention Center in Chiba prefecture on July 30th and 31st, the event will feature playable demos and trailer movies of the company's 2005 line-up of games, the sale of character merchandise and game soundtracks, and a publishing corner.
Source: RPG Fan

NOOOOOOOOOOO!!!!!!!!!!! *crys* where is' the Advent children?!?!?!?!? BUT OMG!!!!!!!!!!!!!! Everything else is the ROXERS!!

They're having Advent Children, too. It's not in the list, but it's mentioned in the last paragraph, probably because it's not a game.

I wish I lived in Japan. I would go. *chibi pout*

uwaaaa~!!! TT___TT
I wanna goooo!! darrnn!! lets all migrate to japan!! XD and start a clerith tribe!! and camp outside the square-enix building for the rest - of - our - lives~!!! XD XD

LOL Good idea. Lets all pack up and sneak onto an aiplane that goes to Japan. *brings paper and pecil and writes:
"Dear Friends and Family (I dont like you teachers),
I'm going to japan forever. Please send cash and clean underwear!!"
And write down: "Must get autograph from Nomura!!!"*