Just a heads up that you should check your MS store order to see if it also went to backorder since mine did even though I put my order in on June 6th. (What I get for being cheap and going with the $20 dollar/1600 MS point deal).
Note that they do ship according to when you pre-ordered, so cancelling and re-ordering from the same source with better shipping, for example, will toss you to the back of the line.
Anyone else order from this source? the status of your order?