I also read the same (think it was on wikipedia). But can't seem to find the update version anywhere in the U.S. I think it may only be re-released in the U.K.
I wish they would release it here. I'd like to have a decent mini-golf game (I'm assuming that the motion plus makes it decent). All the ones out there prior to motion plus pretty much sucked. Anyone know of any others on the way using motion plus?