I am amazed with the amount of resource Google is providing for developers.. amazing..
Android L & Material Design
Material Design in my words is realistic design, responsive design. I was just going through Material Design Specification
One Must go through all animation at least once..
Visit here for more http://www.google.com/design/spec/animation/authentic-motion.html
Visit here for more http://www.google.com/design/spec/animation/responsive-interaction.html
Meaningful Transition :-
Visit here for more http://www.google.com/design/spec/animation/meaningful-transitions.html
Visit here for more.. http://www.google.com/design/spec/animation/delightful-details.html
When I look about this much resources to help developers to become developers.. I feel proud.. this open system ( wheather it is apple or Google) is helping world to bring amazing talent coming out from anywhere..