Any item that is listed on your order as a backorder will be shipped as soon as it becomes available via standard shipping.
We strive to provide the most accurate arrival dates for items that are out of stock and work hard to have over 99% of our stock available at all times. If we can't confirm the exact date an item will be available in our warehouse, we usually list it as 'Notify Me' which is different from a backorder.
Items that are listed on the website as 'Available (date)' can be placed in your 'Notify Me', and we will send you an e-mail when this item is available for purchase. You can find additional details on this functionality here.
If you have an item saved in your cart as a 'Notify Me', you will not receive free shipping on that item when it is eventually in stock, unless you have met the $50 minimum for free shipping.