This means that your order is awaiting shipment. We have received the funds and have your order locked in. You should have also received your order confirmation email by now. Once the order is ready for dispatch and your dispatch email will be sent out to you, this email will hold all of the vital information you would require in regards to the dispatch and more. You will then also see your order status move from processing to complete.
If you ordered any items with a later dispatch date, then your order would remain in this status until the given date is reached