Microsoft have released Windows 10 Mobile build 10586.122 for Windows Insiders on the slow and production rings. This is a cumulative update of the Threshold 2 branch of Windows 10 Mobile and not the Redstone release currently available on the fast ring. The update includes fixes for the SD card and the out of box setup process.
Microsoft have also added some additional devices to the Windows 10 Mobile insider program: MCJ Madosma Q501, BLU Win HD W510U, BLU Win HD LTE X150Q, and ALCATEL ONETOUCH Fierce XL.
Changes in this release:
Improved Kanji input experience while using Continuum.
Improved the speed in which thumbnails appear for portrait videos.
Improved Internet Sharing on select mobile network configurations.
Fixed an issue in Microsoft Edge that prevented Word Flow input on some sites.
Fixed an issue that previously prevented the option to “Close all Tabs” in Microsoft Edge from closing all open tabs.
Improved IMS registration on select mobile network configurations.
Fixed an issue where adding your MSA during OOBE would fail and prevent the account from being re-added after the failure.
Improved the email sync experiences when connecting to Wi-Fi networks with a captive portal.
Improved data connection profiles for dual SIM devices.
Updated background processing of multiple changes to improve battery life of devices.
Improved quality of video record to SD memory cards.
Improved video recording audio in some cases.
Improved overall OS reliability, including reliability of the Start screen, app updates, and the Windows Feedback app
Improved Alarm reliability.