Update 9/18/14: An updated version 6.1.07 (previous was 6.1.05) started rolling out. We've updated the APK below to this version.
Update 10/2/14: An updated version 6.1.11 (previous were 6.1.05, 6.1.07, and 6.1.09) started rolling out. We've updated the APK below to this version.
At Google I/O this year, we learned that Google Play Services is generally updated on a six-week cycle. As expected, the mighty puzzle piece behind Google's Android services is getting an update starting today that introduces a number of small changes that most users probably won't notice but which may make developers' lives a little bit easier.