Wasn't it something about some relatively well known Japanese magazine that reported some kind of game would come to GC (very important one, I believe it was Mario, Sonic and... Megaman? Together. ). Nintendo fans hyped it like insane, and it turned out to be a fake hype (the game didn't exist).
There was a thread about something ala this when M&S at the Olympics was announced. People were claiming it was fake or something.
It's a year ago, and I didn't read a lot in the thread, so everything is kind of blurry now.
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS