According to a trusted source of Cheap Ass Gamer, Walmart will be honoring the official price drop of the 3DS to $169.99 on August 9th, before the official drop date of August 12.
If you remember, Nintendo is giving away 20 free downloadable games to early adopters of the device who access the Nintendo eShop before 11:59 p.m on August 11. So let's work the system, shall we?
So far, that means 10 free NES Virtual Console games [confirmed: Super Mario Bros., Donkey Kong JR., Balloon Fight, Ice Climbers, and The Legend of Zelda] and 10 free GBA Virtual Console games [confirmed: Super Mario Advance 3: Yoshi's Island, Mario Kart Advance, Metroid Fusion, Wario Ware, Mario vs. Donkey Kong, Super Mario Advance 4: Super Mario Bros. 3, and Kirby and the Amazing Mirror].
No word on how Nintendo feels about this double-dipping, though I think they'll be fine with it, since these are downloadable games. And if this gets more people to purchase the 3DS, well, that's the point.