Windows 10 Mobile Insider Preview Build 10586.107 is now available to Windows Insiders. This update includes some additional fixes:

Fixed an issue where in some cases a device could be missing tiles on the Start screen after going through the device out of box experience.
Improved support in Narrator to speak in multiple languages.
Improvements to the device reset experience when BitLocker\Device Encryption is enabled by enterprise policy or by the user.

Source.