Windows Insiders in the Slow Ring can upgrade to mobile build 14367
Windows 10 Mobile update for the Slow Ring Insiders
Along with a new build for the Fast Ring (14371), Microsoft rolled out an update to the Slow Ring Insiders. Windows 10 Mobile Insider Preview 14367 includes tons of fixes and improvements, and only a few known issues.
This build is suitable for everyone who wants a more stable release. In the coming month, Microsoft is expected to refine the new builds to a state in which they could meet the requirements for the official Anniversary Update.