The article's concern over "mobile universal binaries" seems misplaced. I find highly dubious the idea of binary cross-compatibility between iPhone OS and the t

The article's concern over "mobile universal binaries" seems misplaced. I find highly dubious the idea of binary cross-compatibility between iPhone OS and the tablet OS. From form factor to hardware resources, they would constitute two different platforms. Most likely, XCode will have some affordances for sharing resources between an iPhone project and a tablet project.