I'm actually really surprised that their beta test turned out to be an alpha. Public alpha tests are a rarity these days, as "alpha" tends to imply "barely playable." Usually you do your alphas in-house, or friends and family only. It usually implies there's still an awful lot of work to do and you're nowhere near a releasable or complete product.
Doing "beta" signups and then missing your self-imposed deadline and pushing an alpha, implies to me that they're significantly behind, especially if they intend to make the following closed beta, then open beta, longer than FF11's was. (As they've stated they want to do.)
It makes me wonder if the game will even be fully released this year, but that's just idle speculation on my part. I could be misunderstanding.