Google Android Ice Cream Sandwich was launched late last year.
This is the most drastic visual makeover Android has received ever.
The company has focused on design and UI uniformity with this update.
And to make it easy for third party app developers, Google has now launched a dedicated Android Design site.
Google spoke about this new section on the Android website:
To help you in that mission, we’re introducing Android Design: the place to learn about principles, building blocks, and patterns for creating world-class Android user interfaces. Whether you’re a UI professional or a developer playing that role, these docs show you how to make good design decisions, big and small.
The Android User Experience Team is committed to helping you design amazing apps that people love, and this is just the beginning. In the coming months, we’ll expand Android Design with more in-depth content. And watch this blog for a series of posts about design, and invitations to Google+ hangouts on the topics you care about most.