Really? I think they are starting to release information far too early. Since we don't have a release date in 2012 we have to assume its near the Holidays. So it will be a full 2 years of hype and over hype until release.

SWTOR is doing the exact same thing(Announced Oct 2008, releasing spring 2011 so a little over 2 years)
WAR was only in development for 3 years and didn't start hyping until a year into development.

2 years is a long time to keep hyping something and giving information out. I think FFXIV did it right. They were quiet then suddenly popped up and then beta was starting. 1 year-1.5 years is the most I think you can really hype a game before it starts to fade, look at SWTOR. That community took a huge blow when spring 2011 was given.