Compounding the recent stock shortages of Apple's MacBook Air, it seems Cupertino's not-quite-so-air-tight seal has leaked a few new model numbers, which point to either a refreshed MacBook Air or Retina Pro waiting in the wings for WWDC.
The four SKUs have been dug up by the often-reliable 9to5Mac, with two pairs of variants, probably denoting two different spec levels for two separate screen sizes. According to rumours, stock of both the MacBook Air and MacBook Pro with Retina is running out globally too, which normally forecasts an imminent change.
Although this is purely rumour and speculation at this point, it looks like WWDC will hold much more than just Jony Ive's iOS7. Those Haswell chips being spat out in all the new Windows ultrabooks at Computex sure look tasty. Let's hope Apple pushes the boat out without ramping up the prices; I've got my eye on an Iris-packing 11-incher for myself. [9to5Mac]