Last week Microsoft released the Windows 10 PC Build 10586 to the Windows Insiders in the Fast ring. Now this build is also available for the members of the Slow ring. There are no differences between the build for the Fast ring and the one for the Slow ring.
Build 10586 doesn’t include any new features but some improvements and bug fixes. You can find all changes here.
It is likely that this build is also the one which will be released to all Windows 10 users as the Fall update. This update will probably be released in the next days.