DEVELOPERS! DEVELOPERS!! DEVELOPERS!!! Yeah, ok, I know, the chant has been done to death. But, we at Android Police really do <3 developers. Building great apps is a challenging job and it requires an obscene amount of time. As a developer myself, I know how hard it is to invest an extra hour when I'm already busy writing software, supporting customers, and of course, having a life. Unless you are eager to dive into every last session from Google I/O, all 25 hours of Android-specific content, then you might be wondering which sessions are really worth it for you.
It's a cool talk; you'll learn a lot about the pro and cons of each navigation structure, but at about 23 minutes in, while they were talking about the new nav drawer design, they dropped this slide and completely blew my mind:
A few days ago, we investigated the new navigation drawer design present in updates to Google Earth and Google Shopper. The hope at the time was that this new Up button design would be pushed out to other Android apps. We even heard from a few Googlers that this was happening.
Now, things are officially official, as the Android Design site has updated with Matias-approved guidelines for the navigation drawer.