Microsoft has released Windows 10 Insider Preview Build 19008 (20H1) to Insiders in the Fast ring. It brings various fixes and improvements, but no new features. With the release of Windows 10 1909 (19H2) right around the corner and all Insiders being moved to the 20H1 builds, we should not expect new features for the time being. If you are a Fast ring, you can update to the latest build by going into Settings -> Update & Security -> Windows Update.
Source: https://www.bleepingcomputer.com/news/microsoft/windows-10-insider-build-19008-released-with-fixes/