Microsoft has now released Windows 10 Redstone Build 10586.420 to everyone on Windows 10 version 1511. You can read what the build brings in terms of changes, new features, fixes and also known issues by clicking here. You can now directly download 14-in-1 Windows 10 Build 10586.420 (Unofficial) ISO images.
Microsoft has now pushed June 2016 cumulative update KB3163018 to everyone on Windows 10 version 1511. The update takes the Windows 10 version to Build 10586.420. The Build brings lots of fixes and improvements with itself that you can read in detailed changelog below. Windows 10 Build 10586.420 Changelog: This update includes