Did they remove it from the site? It isn't there anymore.
By the way, when did this become a remake? I can't find any sources claiming it is a remake.
IIRC Dengeki or some magazine revealed it is going to be the remake (and they'd like to do the same to 2 & 3 if possible, ultimately reading to 5).
Anyway details are to be revealed at 17th Sept. 0:00 GMT+9 (11 hrs from now).
http://dengekionline.com/elem/000/000/873/873246/
The above link is about Saga & Rise of Mana but also mentioned about OG FFA, 2 & 3.
(The guys is saying they want to make all of those playable on modern platform).