This. If your doing a surprise party for someone you don't want to spoil the surprise before the person gets there. Same thing here. Square Enix doesn't want to tell surprise too early.
And there are lots of people who work at Square Enix who are on these forums. They would just prefer not to lose their jobs for leaking stuff or saying something they shouldn't have so they tend to be quieter in these forums.
Eh...who? Actual users? Or are you just speculating?
All I know is, I can't wait for the interviews and reasonings as to why the game has been pushed aside so much. It's not hard to go back through Nomura's interview history and count how many times he claimed to be showing it soon only for it not to happen.
We really need a postmortem of some kind.