Japanese magazine Famitsu has asked Tetsuya Nomura on how the Dissidia project is going along, and while he did state that "the game is in full production mode now" and that the production team is giving it all they've got, it is unfortunate that they won't make it to this year's deadline.
Earlier, Nomura was reported as saying that the game can not be released later than this year as it is a 20th anniversary offering. Releasing it at a later date would prove the celebration futile. However, it appears that a release next year is precisely the scenario we're looking at.
The reasons cited for this delay were high expectations and quality controls. Oh well. For a guy like Nomura, it's not surprising that he'd demand nothing else than perfection. Famitsu don't really mind that the Dissidia release has been pushed back to next year, if that really is the case. Sure there'll still be plenty to celebrate once it's finished.