It is really strange, some retailers are pushing the game back for a September 7th release. If you were wondering, the retailers are Zaavi and TheHut. No other stores are doing this so why is Zaavi doing so? Could this be a mistake? There is no reason why they should be delaying the game by a month. If you pre-ordered the game off of these two sites, you may want to reconsider popping an email for an explanation. If it is in fact true, then may I suggest preordering off of a different website?

Source: GoNintendo