Here's the article that the original link links to...
Final Fantasy World
Translated version of the article...
Translated version of http://ffworld.com/?rub=news&page=voir&id=1108

Translated text..
In an interview with Japanese magazine Dengeki PlayStation, Tetsuya Nomura offers some interesting details about Final Fantasy VII Advent Children Complete, Blu-ray version of the film out there is already a certain time. We thought so far only a few bits of footage had been added, but little information and a complete absence of release date proved to be quite strange. In fact, according to Nomura, these are passages of the whole scenario that have been added and others who have been modified. In the end, the film should win in length and density. The Japanese release date has been decided, but it will have to wait (probably to the event DK Σ3713 in early August) so that it is unveiled. Nomura also notes that a big announcement that should accompany the release date, without giving more details ... Such vagueness should encourage the wildest rumours.

Tetsuya Nomura is also rapidly on the development of Final Fantasy XIII Versus, a topic that had already provoked a general cafouillage a few weeks ago. The director of Thursday confides that the team is currently working above is very reduced, for the simple reason that the team is dedicated kinematics especially Advent Children Complete and programmers lend a hand to those of FFXIII. No, really, Versus XIII should not arrive before long ... As a consolation, we can expect to have FFXIII faster.

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Here's another article...
PS3 News: Square-Enix: "Big Announcement Prepared For FFVII"
That article says that the announcement is related to FF VII and unrelated to FF VII: Advent Children Blu-Ray. Maybe they are announcing a new title in the Compilation of Final Fantasy VII series. Maybe they are announcing a remake/port of Final Fantasy VII. If they do this second option, that means that they will announce remakes of FF V and FF VI at the same time. Also, if the FF VII remake is announced, I wonder if it would be for DS 2 and/or PS 3? Oh and if it's announced for DS 2, that would be unlikely since DS 2 isn't announced yet. If so they'd just say they are developing for handheld but don't get specific on it.

This is big news coming up! ... on another note, it appears that the only rpg I'm looking forward to this Fall for Usa is Chrono Trigger. I just hope that they include Radical Dreamers!