Last Updated: January 12th, 2014
Update: You will find several mirrors of the APK below for manual flashing.
Google Play Services 4.0 was released in late October just after the Nexus 5 and Kit Kat became official, bringing with it plenty of improvements to things like Google+ sign-in, Wallet, Location services, and more.
Today, via the Android Developers Blog, Google announced the rollout of Google Play Services 4.1, which offers developers more and better tools to make compelling apps.
Last Updated: November 7th, 2013
Update, 11-6-13: We've added in all the relevant stories from the following week.
As you may have noticed, your friendly neighborhood Android Police writers have been more than a little busy in the last couple of days. Google had the odd notion of launching a new flagship device and a major operating system update on a holiday, so it's understandable if you haven't been able to keep up. If you spent most of last night escorting your kids around the neighborhood (or if you don't have kids, and you spent most of this morning nursing a Halloween hangover), here's everything we've got on KitKat, the Nexus 5, and anything else you want to know.