Somebody asked about whether MKWii would be 60 or 70 dollars. Well, JeuxFrance (which for some reason has a ton more info than anybody else) sells it for 49.99 Euros. I assume that 49.99 dollars will be the American, but it might be 55.99 dollars.
They have the American release date listed as 11 April too.
And hey! I haven't had any pictures of Koopa Troopa yet, but here there is one.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS