I think it will be September on its 1 year anniversary. Yoshi P. said in an interview that September would be when he see new players and old players coming back to FFXIV. That to me pretty much confirms it but they aren't going to make it official until they are sure it will be ready by then as they can't afford to screw this launch up.

I am not worried about content as I believe they have loads ready to go, the evidence is all around that stuff has been pulled from the game at the last minute. I imagine they are waiting for the core mechanics to be finalised like the battle system to be put in so they can balance the content for it all at once. Then SE have 2 choices really:

1. Give us the content asap, it would create some hype and get PC players back, but they wouldn't have much to help generate more hype for the PS3 release.

2. They save as much as they can for PS3 release then show us what is coming for it and use that to generate even more hype and get PC and PS3 players into the game. If they say on PS3 launch they will put in Chocobo's, Airships, New cities (Ishgard), new missions, new quests, new gear, remove R50 level cap and so on.

I think they will go with option 2 but we shall wait and see.