[APK Teardown / What's Really New] Gmail 4.6: Ads Are Coming To Gmail For Android, Unsent Messages Warning, And More

Now that the insane week of Google app updates has passed (gotta love those Rollout Wednesdays, right?), I've had some time to dig into the APKs and have found a number of interesting things in some of them.
We'll start with Gmail, which received a fairly significant Card UI update with version 4.6.

http://www.androidpolice.com/2013/09/28/apk-teardown-whats-really-new-gmail-4-6-ads-are-coming-to-gmail-for-android-unsent-messages-warning-and-more/