Yes, hype is deflating somewhat but E3 was never going to be a biggie for them.
The game had its big reveal and blowout in March, its coming out in 2 months. People no longer care to see footage from it (we've seen more of it than with any FF at this point), they just want to play it. All the other big E3 games were literally just announced or were still shrouded in mystery.
Hopefully the next FF game is announced no more than 16months before it comes out.