Windows 10 build 18947 (rs prerelease)

Windows 10 build 18947 (rs_prerelease) is a private build of Windows 10 May 2020 Update. This build was not intended to be released but it was accidentally flighted to all insiders in all three rings on 24 July 2019.

Breaking the known insider releases routine, Microsoft managed to also release build 18946.rs_xbox_dev as well as the 18947.rs_xbox version before pulling all three releases after publishing this build in all three architectures.