Microsoft Window 10 version 2009 is restricted to small insider testers

Microsoft version 10 20H2 version 2009 insider preview is currently only available to some explorers. Microsoft is still very cautions to push to public testers.

In the Window 10 health dashboard, Microsoft revealed that the current push is throttling in some users testing so even it you are an explorer with no specific block, Microsoft may still not provide you with operating system updates

Status of Microsoft Win10 Oct 20H2 version 2009

Window 10 version 20H2 is suitable for users who run Windows 10 version 1903 and above and manually check for updates

The recommended service status channel. Please Note that in the coming weeks, we are slowly controlling availability to ensure a reliable download experience. Therefore, the update may not be provided to you immediately.

Microsoft may be waiting to see if there are more problems. The two unsolved issue are still under investigation

Knows Issues in October 2020 update

  • Errors or problems that occurred during or after updating the device with the certain Conexant audio drivers.

Device using the affected Conexant or Synaptics audio drivr may receive a stop error with a blue screen

  • Errors or problems that occurred during or after updating the device with the Conexant ISST audio driver in the Windows 10 version 2004 or newer.

Source