Earlier this week, Windows Insiders in the fast ring received a new build of Windows 10. Microsoft has now pushed a cumulative update for those not participating in the Insider builds.
The update, KB3124200, is available to users that are not currently enrolled in the Insider program. The cumulative update brings Windows 10 to build 10586.36, which should offer improvements and enhancements. Unfortunately, Microsoft has not released a changelog to detail the improvements and enhancements, but this should arrive soon.
Naturally, if you are running Windows 10, be sure to check to see if the update is available for download. If you are participating in the Insider program and you have already updated to build 11082, you will not see the aforementioned cumulative update.
Source: Microsoft via WinBeta