It carries the build number 10.0.19042.
The first preview was released to Insiders who opted in to Beta Channel on June 16, 2020.
[3] The update began rolling out on October 20, 2020.
[4] Notable changes in the October 2020 Update include:[5] The update has reached end of service on May 10, 2022 for Home, Pro, Pro Education, Pro for Workstations and Team (for Surface Hub devices) editions.
[8] Release Preview Channel:September 18, 2020 Public release:October 20, 2020 Public release:November 30, 2020 Public release:February 24, 2021 Public release:March 29, 2021 Public release:May 25, 2021 Public release:June 21, 2021 This update is no longer available from Microsoft Update Catalog or other release channels since September 12, 2023, although it continues to be available from Windows Update.