It was stated on the original road-map that the PR Campaign would begin for FFXIV:ARR around the Alpha/Beta Phase onwards.
The live broadcast on Nico Nico, Youtube Trailers and tid-bits of news from the Alpha was the begining of that PR Campagin.

Until the 3rd/4th Phase of the BETA I wouldn't except them to start a major hype train until they are sure they can give a loose release date.

When FFXIV:ARR is brushed up and the Non Disclosure Agreement (NDA) has been lifted THATS when things will kick off. Nothing works better than word of mouth!

Dude 1: "Holy poops, did you see that video that guy posted of that dungeon?"
Dude 2: "Yah-weh! Looks totally awesome, the game doesn't look like poop anymore, we should play the trial on release!"
Dude 1: "DUUUUDE! Tell everyone."
Dude 2: "Duuuuuude! Totally!"