Sketchy rumor Sunday, people -- Chinese site Apple.pro is saying there's a 15-inch MacBook Air in the works. That would certainly be an interesting compromise between portability and screen real estate, especially since the Air's new NVIDIA-based internals are actually somewhat capable, but we wouldn't bank on big brother making an appearance just yet -- although Apple.pro was right on the money with leaked unibody MacBook pictures , it's also been way off in the past. Anyone else mildly intrigued by the idea of a thin'n'light with big screen? Comments await.[Via AppleInsider