Images of what's claimed to be an early prototype of the next-generation MacBook Air have surfaced in a new leak. The design, purportedly dating back to April of this year, implied that there may still be a 13-inch version but also that Apple would have addressed some of the common complaints of the Air's 2008-era build. Engadget pointed out that it would eschew the drop-down expansion row and have two USB ports, one on either side, as well as an SD card reader and the requisite Mini DisplayPort output.