Amazon (Click here) just issued that warning on the Fuji X100s camera page. And according to unconfirmed rumors it seems that there is a very curious cause. The X100s shipment from Japan has been water damaged! If this is true than you will have to wait a long time before you can get your preorder.
The only store that has a limited amount of X100s in Stock is . And they charge you $230 extra for it :(