A release of the rumored 11.6-in MacBook Air may be approaching, as supplies for the current editions are dwindling rapidly. According to AppleInsider, major Mac retail outlets like Amazon, MacConnection, MacMall and J&R Electronics are sold out of the 1.83GHz version of the normally slow-selling Mac ultralight. Two or more of the retailers are out of stock in the higher end 2.13GHz version as well.