https://wccftech.com/windows-10-19h1-cumulative-update/

Microsoft began the process of Windows 10 October 2018 Update re-release yesterday after nearly 6 weeks of wait. The company also pushed cumulative updates to all the older versions of the operating system, including version 1809. It appears that the updates didn’t end there as the Windows maker has also rolled out a cumulative update to those testing Windows 10 19H1.

Last week, Microsoft released a new Windows 10 2019 Preview Build to insiders in the Fast ring. Build 18277 brought in a number of new features, including emoji 12 beta. The company is now issuing a cumulative update to Fast ring insiders who have updated their PCs to the latest Windows 10 2019 version.