From a client email:
What is meant by a pre-order? Is the delivery time the same?
The term "pre-order" only pertains to new styles. We can order them from the manufacturer, but they will not ship until their scheduled release date. We only offer pre-orders with our suppliers' consent.
Pre-order means they are allowing you to place an order for an item before it is available on the market...so you can avoid potential backorders when those items actually launch.
As such, they will not ship until their respective release dates.