A tipster who apparently correctly predicted the recent MacBook Pro refresh has alerted Australian Macworld to a new SKU making its way through Apple's systems down under. According to said "well-placed" source, the MC516LL/A K87 BETTER BTR-USA code string identifies an incoming batch of all-new MacBook Air laptops. This makes all the sense in the world given the recent hubbub about Intel offering ULV versions of its 32nm Core 2010 processors and the Air's overdue need for an upgrade, but there is the proviso that this could also be referring to shipments of new 27-inch LCDs, to match the ones found on the latest iMac generation. Either way, we're looking at some unannounced hardware rapidly making its way to Australia. Hey, doesn't Apple make a habit of announcing new goodies on Tuesdays?