Following up on yesterday’s MacBook Pro rumors, 9to5mac reports that the next generation MacBook Airs will include Retina Displays. The current tapered design of the MacBook Air will not be seeing any imminent upgrades. Without any external upgrades, Apple looks to focus on the internals of the MacBook Air lineup instead. According to various supply chain sources, Apple plans to implement the newly released Ivy Bridge processors and improved graphics; these upgrades will greatly improve performance and be able to support the high-pixel-density Retina Displays.
It appears that Apple is planning to slowly revamp their entire product line with Retina Displays. While this news is very exciting, it is unrealistic to hypothesize on a launch date for their Air line up. It is common for Apple to slowly announce each of their new products; we will have to wait and see what happens at this year's WWDC.