The retailer has just launched pre-orders for the PS4 and Xbox One versions of the game. Best Buy charges instantly for pre-orders, but will remove and add the pending charge multiple times until the product finally launches – in this case until September. I think of it as the retailer simply checking to make sure that the money is there. Possibly a tad more inconvenient than the no money down style of Amazon or GameStop, but a valid option nonetheless.
At the time of this writing, Best Buy is the only online store with stock of the MGSV CE at MSRP of $99.99