There will be a special promotion when Super Smash Bros Wii U come out in the US. If you buy the game at Toys R Us, you will also receive a free amiibo figure. Be aware that this promotion is only valid online and while supplies last!
Here is what to do. Order Super Smash Bros. for Wii U game and one amiibo figure so that they are in your shopping cart individually. During the checkout process, the price of the amiibo figure will be changed to free. This also gives the order free shipping.
For those wanting to collect all of these figure, the first wave of 12 amiibo figures will come out on November 21. Then, wave 2, which adds 6 amiibo, will come out sometime in December.
While Super Smash Bros. for 3DS has already launched, Super Smash Bros. for Wii U will come out on November 21.