No no, releasing a nano ipod now would just ruin the money making scheme they have.
They released the nano, people quickly sold any old ipod or mini they had, got it.
few weeks later, they release the video. People now want video because video is better than some small ipod.
Later, an ipod camera is released, everyone gets on that.
Then ipod with video camera.
But only after they are released can they make the ipod into nano.
Throw in the waterproof somewhere if it is true.