A new report from Japanese site Macotakara.jp suggests that Apple is testing a new MacBook Air powered by an A5 ARM processor, the same as found in the iPad 2. It goes on to indicate that the “test machine performed better than expected.”
It’s not clear if the test system is powered by Apple’s full-fledged Mac OS X or by the ligher iOS currently powering iPhones and iPads.
Macotakara points out that this may be nothing more than an experiment given that such a processor switch would require developers to modify their applications as existing versions would not work. Could Apple be thinking of porting MacOS to the ARM architecture or extend iOS to its PC lineup sometime in the future?