The latest MacBook Air refresh has been rumored for about a month or so. Those rumors are seeming closer to reality as inventory is running out at many retailers. Best Buy no longer carries them online. We’re also hearing that Amazon is running low (via 9to5mac).
As is the past trend with Apple computers, this tends to happen just before an update. The update, we expect will probably mean Sandy Bridge processors, and a Thunderbolt port. We wrote our own little speculation piece a few weeks back (link).
As with most of Apple’s products, the computers get yearly hardware updates to keep up with the competition. They don’t always involve cosmetic changes, so don’t expect the design to change much if at all. However, the insides will no doubt be kicked up a notch.