https://wccftech.com/fast-ring-friday-flight-brings-windows-10-20h1-preview-build/

Microsoft has delivered a Friday Fast ring build from Windows 10 20H1 branch. As reported earlier this week, the company is no longer testing any new features since this particular feature update has been finalized internally. Only bug fixes and performance improvements are getting the attention now. Microsoft has also started releasing Windows 10 20H1 previews to the Slow ring Insiders and is rumored to deliver the RTM build next month.

Today's release of Windows 10 2020 Insider Preview Build 19030 for Fast ring removes the build watermark. However, the Windows maker says that it doesn't mean the process is done. While this surely doesn't make build 19030 the RTM build, it certainly signals that the RTM release is going to happen soon. Maybe even early in December?