The reason for the delay has been put down to needing to fine - tune the software and hardware integration more before releasing it to the general public. (neowin.net)
A delay for Android is somewhat unavoidable without Google having the luxury of direct hardware integration, but the lack of steps to accelerate the process for carriers and OEMs has magnified the difference. (macnn.com)
By utilizing tight hardware integration and a rock - solid operating system, Apple makes computers that just don't crash. (abajournal.com)