Microsoft has just released a new cumulative update KB3156421 Build for the official version of its operating system. The cumulative update KB3156421 can be downloaded by all users of Windows 10. Updates likely to include some security fixes, patch and stability improvements for Windows 10.
Cumulative Update for Windows 10 Version 1511 for x64-based Systems (KB3156421) and Security Update for Adobe Flash Player for Windows 10 Version 1511 for x64-based Systems (KB3157993).
Update KB3156421 pushed the Windows 10 build version to 10586.318. More details here.