Google I/O 2013 session Android Design for UI Developers by Nick Butcher and Roman Nurik is now available in YouTube.
If you read my blog you're likely going to find this presentation very interesting as well as informative. Nick and Roman cover very important topics for bot designers and developers. I highly recommend taking the time to watch it.
You can find the talk slides at this Nick's G+ post: https://plus.google.com/u/0/+NickButcher/posts/dLYxYwoZfFP