Microsoft has released cumulative updates for Windows 10 versions 1909, 1903, and 1809 today. The biggest news for 1909 and 1903 is the backporting of WSL2. There are also other fixes.
Build 18363.1049 RSS
Microsoft announced that it is backporting WSL2 to Windows 10 versions 1903 and 1909. Cumulative updates are rolling out now to bump 1903 and 1909 builds to 18362.1049 and 18363.1049, respectively.