https://wccftech.com/windows-10-20h2-build-19042-608-kb4580364/

Microsoft has released Windows 10 Insider Preview Build 19042.608 to Insiders in the Beta and Release Preview Channels. The company released Windows 10 October 2020 Update, version 20H2, earlier this week. Today's build seems to be a preview of a cumulative update that will then be delivered to the public.

For more details, head over to the official blog post.