Variant collectors, get your wallets ready! Today Nintendo released a retail version of "Wii Play: Motion" for $50 which is bundled with a Wii Motion+ controller... and they sent e-mails to Club Nintendo members who had registered games from previous WM+ bundles. Those e-mails contained redemption codes for an unbundled version of the game for $30 which can be bought directly through Nintendo. Obviously this is going to be a future collectible if the packing for both differ, as the retail bundle one is going to be very common compared to the direct-mail unbundled one.
Oh, and if you are wondering what Wii Play: Motion is as I was, it is a collection of motion-based mini-games which Nintendo collected together from a number of different game developers to release as this compilation.