Yes, there was a Kindle Special Offers discount last summer at this time which was ended up being applicable to Apple laptops. As mentioned, it apparently wasn't supposed to. I doubt you'll see it happen again.
Best bet for savings is either buy from an authorized reseller that doesn't charge sales tax in your state, or if you have a Discover card you can go to apple.com through shopdiscover.com and get 5% cashback reward. You can even order with in-store pickup and it should work; I did that with my ipad3 and got the cashback.