MacDailyNews is going out on a limb and republishing a unconfirmed rumour sent to the site from the same source who tipped the site last year about the iTunes Wi-Fi store prior to its launch on the iPhone.
Think MacBook screen, possibly a bit smaller, in glass with iPhone-like, but fuller-featured Multi-Touch. Gesture library. Full Mac OS X. This is why they bought P.A. Semi. Possibly with Immersion's haptic tech. Slot-loading SuperDrive. Accelerometer. GPS. Pretty expensive to produce initially, but sold at "low" price that will reduce margins. Apple wants to move these babies. And move they will. This is some sick ****. App Store-compatible, able to run Mac apps, too. By October at the latest.
MDN notes that this is a rumour, and none of the information has been independently confirmed at this time.