Found an early prototype next-gen MacBook Air

Last week Engadget posts a single shot of a prototype MacBook Air. The prototype device is labeled "K18". On the picture they found USB plugs on the left and right sides of device, Mini DisplayPort and an SD card reader on the left, and a power plug on the right. The prototype on the picture is the same size and style, has the same "large single mouse button", same 1.86 GHz Core 2 Duo SL9400 processor and 2GB of RAM as the current model of MacBook Air. Engadget’s source claims that the shot was made early in April. Moreover, а new SSD Card storage is rumored to be installed in upcoming MacBook Air. It's possible that such SSD Cards will resemble a stick of RAM.