It really is too bad that who ever decided to pull the idea of including a Backlit Keyboard on the new release of Macbook Air (late 2010). I certainly was not expecting this to happen, considering how it was standard on the previous one.
One logical explanation is Apple's clever marketing tactics. Since it's all psychology behind it, marketing tricks people into wanting the best-of-the-best products and features, and now an Apple back-lit keyboard comes down to if you want it really bad, you'll have to pay extra for it! Effective today that Back-lit keyboard is now a premium feature, offered in the more expensive models. So open up your wallets more, you won't get shares in Apple, but you'll certainly have that precious Back-lit keyboard again by purchasing a MacBook Pro instead.
Overall, I think it was a bad idea to subtract a feature like that when consumers loved it so much and had gotten used to equating MacBook Air with Back-lit keyboards. It's like snatching candy from a baby.
I will be waiting until 2011's product refreshments to iPad and the rest of the line, when things come standard with OS X Lion. Wait if you can and save your Christmas spending dollars for something else. 🙂