GameStop offers preorders for the just-announced Sony PlayStation 4 Pro 1TB 4K HDR Console for $399.99 with free shipping. Although this is list price, this is the only store that has preorders available for this upgraded console, which was officially unveiled by Sony today. A comprehensive list of specs has yet to be made available from Sony; however, it is known that the PS4 Pro has double the GPU and hard drive space of a standard PS4 console, as well as a faster CPU. It's scheduled for release on November 10.
Update: It's now also available at Amazon for preorder for the same price.