One thing I did notice on the bottom of that page is that you can't transfer user data from the Japanese version.
I think the most likely thing is that they're starting a new server, while discontinuing the license agreement to Nutaku. This means that slowly those on Nutaku will want to transfer to the English version on the DMM server, but they won't be competing with those playing the Japanese version (3 years ahead) and it'll probably be year one all over again.
If this is true... I'm a definitely re-rolling my account for a 100% Eidolon. Sucks donkey balls not having one and me being too lazy to start from scratch while everyone else is 2 to 3 years ahead. But if everyone starts fresh... no excuse whatsoever!!
Dejnov.