Ah, so it's just the typical Totobeni negative fudging. He'll probably drop by again and say it's never coming.
Here's some actually founded speculation:
This is Kamitani's lifelong dream project. All hands on deck, pour everything into it kind of stuff. They were hiring more people and expanding the studio to work on it.
Grand Knight's History, for this reason, never saw a western release. They simply didn't have the time or funds to help Xceed bring it over (even though the translation was complete).
Ignition goes from being a development/publishing house to just publishing (Japan studio's El Shaddai was the last game they made in-house).
Shortly thereafter, ATLUS gets the publishing rights from Ignition.
A PSblog post by Avi gets put up. Vanillaware is getting development help from Atlus, they're expanding the game's scope, and it will no longer have a 29.99$ price point (39.99 confirmed by Avi for Vita).
So it seems obvious that
1. Vanillaware was creating a game more massive than any they've done before, and needed help (plus money, if they're doing work on Muramasa's 4 new characters and quests).
2. Ignition, closing their dev side, couldn't provide that.
3. Atlus picks it up, gets some of the SMT & Persona people on board.
4. Vita still confirmed in late April. Game still set for Japanese release in Q1-Q2 2013 as of October.
Edit: Speak of the devil.