Android is a robust software stack that includes an operating system, middleware and select applications. If you are developing Android apps or devices for mobile phones, tablets, etc., here (
http://community.arm.com/groups/android-community) is where you'll find the latest ARM technology including Android porting guides, reference platform information and Linux kernel information including partnership with Linaro. You'll also find useful information on Mali, graphics IP and some of ARM Android porting service partners.