Interestingly the game was rated for Xbox 360 several weeks ago, but now a rating for the Wii Virtual Console has hit the 'net:
Monster World IV
SEGA Europe Ltd
The content of this game is suitable for persons aged 7 years and over only.
It contains: Non realistic looking violence towards fantasy characters - Non realistic looking violence towards characters which although human are not very detailed
System: Nintendo Wii - Virtual Console
Release date: 2012-03-28
Bear in mind the release date is just the release for the PEGI rating, not the game itself, so don't get too excited. It's also worth remembering the Australian Classification Board rated it last year.
Still, it's good to know that Monster World IV is (almost) definitely still happening, right?