I've been looking at what Microsoft has been doing with its Surface Pro, and it made me think that Apple could do something like it with its Air notebook. It's already thin, and removing its keyboard would only make it lighter and thinner. Apple could also integrate some touch screen features into its next version of OS (after 10.9). Apple also offers bluetooth keyboards, mice and trackpads, so it wouldn't be an issue if you wanted a full-featured laptop... It also wouldn't interfere much (if at all) with the iPad given the price difference, and for those who'd want an actual laptop, there's always the rMBP (it seems that Apple will eventually discontinue the cMBP.