You know the routine by now: Apple's online Store goes down, the Engadget tips inbox explodes with caring netizens informing us of that fact, and a few hours later it sprouts back up with Cupertino's latest hardware up for sale. We don't know for a fact that today's downtime is due to a MacBook Pro refresh , but then we also don't know for certain that the sun will rise tomorrow. Call it highly informed guesswork.