With Apple's Mac lineup beginning to show signs of aging, consumers are no doubt starting to wonder when they can expect updated models to hit the market. Apple's product update cycles are in large part driven by availability of new processors, so it pays to take a look at Intel's roadmap to see what might be coming when to give Apple new options for upgrades. The MacBook Air is the older of Apple's two current notebook lines (setting aside the non-Retina MacBook Pro that has been reduced to a single 13-inch model and hasn't been updated since June 2012), and Apple's ultrathin notebook currently offers a choice of two low-power 15-watt Haswell chips to help achieve remarkable all-day battery life. Entry-level models include a 1.3 GHz i5-4250U chip, while higher-end models bump
