Microsoft may release the next Windows 10 Mobile Anniversary update release Build to non-insiders on December 13 (Patch Tuesday). We earlier reported about Windows 10 Mobile Build 14393.571 appearing as the newest Anniversary update CU Build. But now a newer Anniversary update CU build, 14393.573 has appeared on the site BuildFeed, that tracks internal builds under testing at Microsoft.
The Build 14393.573 has been compiled on November 30. It marks a big jump in sub-version number over the last Windows 10 Mobile release Build 14393.448 to non-insiders. As the jump in Build number suggests there may be lots of fixes and improvements coming with this build. Microsoft may release Build 14393.573 to non-insiders in coming week for testing and feedback.
The latest Windows 10 Mobile Anniversary update release Build is the Build 14393.448 for non-insiders and Build 14393.479 for Insiders in Release Preview Ring. But testing of newer builds will continue with help of insiders in Slow and Release preview rings. You can read our coverage of the Build 14393.448 by clicking here.