This is not the trailer of a new game, it doesnt mean a remake of FFVII will come out soon:

***Interview with FFVII creators from the Final Fantasy VII Ultimania
Omega***
--"At E3 (the world's largest game show, which was held in America), as a demo
for the PS3, the opening of FFVII was shown; was its purpose to serve as
something of a preliminary announcement?

Kitase
"Well, in regard to that, please think of it as a mere demonstration. Because
the production period for its imagery was [going to be] so short, we made the
opening of FFVII, as it was easy to represent. Beyond that, there is no
particular deeper meaning.


--"In that case, it's not a remake; when might you be making something to
serve as the direct continuation of FFX-2?"

Kitase
"Producing something like that holds the same problem as a remake [of FFVII],
as our schedule just isn't open for it [right now]."

now that that´s all clear enjoy

From E3 '06 I think.