We have gotten confirmation from 5 different sources that Hasbro Pulse is cancelling some of the pre-orders placed for the Dinocassettes. From what the emails from Pulse have been saying, it appears as though Pulse over-sold the Dinocassette pre-orders, meaning that those who placed later pre-orders are at risk of not having their orders fulfilled due to lack of stock.
The emails started going out a couple of hours ago, so if your dinocassette order is to be cancelled, you will probably be hearing from Hasbro Pulse shortly. You will not be charged for the order since there is no stock, though it does seem as though Pulse is offering a $10 off your next order coupon for the trouble of cancelling the pre-order. It is some type of consolation, but certainly disappointing that some people will not be getting their dinocassettes.