2012-04-27 Key Android Engineer Weighs In On Manufacturer Contributions To AOSP And Update Rollouts - You Might Be Surprised Who's On Top android http://www.androidpolice.com/2012/04/26/key-android-engineer-weighs-in-on-manufacturer-contributions-to-aosp-and-update-rollouts-you-might-be-surprised-whos-on-top/ SONYは正しい道を行っているのだが、商売的にはどうだろうか。