Yesterday, Microsoft released a new Windows 10 build, KB 3163014. There's no associated KB article.
The new build, which brings Windows 10 version 1511 up to build 10586.338, is being distributed to the very small group of people in the so-called Windows 10 Insider Release Preview ring.
Microsoft quondam Windows spokesman Gabe Aul announced the Insider Release Preview ring back in February, but it was tacked on the end of a Windows Experience blog post that
you might've missed -- "Announcing Windows 10 Mobile Insider Preview Build 10586.107." Later in the post, Aul explained that new Windows Insider Preview ring:
Will focus on Insiders that want to stay on the Current Branch (currently builds based off of 10586), but continue to receive early access to updates, application updates, and driver updates.... Best for Insiders who enjoy getting early access to updates for the Current Branch, Microsoft applications, and drivers, with minimal risk to their devices, and still want to provide feedback to make Windows devices great.
