Hello @JuergenPT, here's the updated timeline as per this blog post.
Roadmap (updated 3.9.2022)
The private preview for Microsoft Graph kicked off in December 2021 with the web application enabling approval and scheduling of drivers. In May 2022, management reporting in Update Compliance will join the private preview, and we plan to launch all capabilities in public preview in July 2022, with a fully open-sourced web application. It will be publicly available in Intune later this year.