+Matias Duarte and his Android UX Superfriends have been fine-tuning this new drawer for literally months. We'll have a bit more to say about it at Google I/O, but in the meantime I, for one, totally share AP's enthusiasm.
Is there an official stance on whether to slide the ActionBar or not? The Google+ app still does it, but it may just not be updated to the more modern standards you guys have placed on Earth and Shopper.
My favorite detail is the "here be a drawer" glyph to the left of the app icon, in place of the angle bracket. It reminds you of the list of options in a drawer, but also makes it look like the icon is going super fast! #speedlines
Hopefully all other google apps implement this. At least then Google apps will be consistent. Ideally 3rd party apps can do it too with the holo design. I've always been perplexed on how all the google apps had different navigation system in the app.
I'll just throw this out there: it's important to keep in mind that Google+ was among the first apps to use this idiom at all, and at this point they've been using it for quite a while. The final design that we came up with goes in a different direction than what G+ has done in the past, but that doesn't take away from the fact that they were one of the pioneers here.
+Adam Bliss I still haven't figured out why Chrome sometimes changes tabs and sometimes doesn't - usually it changes when I don't want it to - and then why I try and figure out what I did to make it change - it won't do it......