The release of a rumored MacBook Air refresh may be approaching, as supplies for current models are said to be dwindling rapidly. According to AppleInsider, major Mac retail outlets such as Amazon, MacConnection, MacMall and J&R Electronics are sold out of the 1.83GHz version of the normally slow-selling notebook. Two of the retailers are also listing the higher-end 2.13GHz system as out of stock. The drought technically began weeks ago, with low inventories at a number of vendors. Sources at Best Buy and Amazon are reporting that new supplies are not expected until
