"Apple's new 12-inch MacBook Air will enter mass production in the third quarter, filling the gap between the 11- and 13-inch MacBook Airs as well as enhancing Apple's leadership in the small-to-medium-size ultra-thin notebook market, "
Quanta computer will be responsible for the 12-inch MacBook Air assembly and they didn't heard any changes coming to the 11/13-inch model. The report says that Apple want to release a 12-inch MacBook Air because of the screen size similarity between the 11-inch model and the iPad, so the company wants to create a clear distinction between the two as iPad sales are impacting MacBook demand.
The 12-inch MacBook Air is rumored to feature some internal design changes such as battery and component changes, however it will keep the same design as the current lineup.
