Well this would be great, but I highly doubt it.
Think about it: It's a GERMAN retailer, and Germany is in Europe. But games never release first in Europe, especially not games made by a Japanese developer. Because of that AND because the date they mention is pretty soon, I don't think that this is more than a date made up by the retailer himself.
But maybe this is a proof that the game is still in development, and that would already mean quite a lot to me, actually.