The preview build is available to download from the Epic Games launcher and GitHub. You may have to update or restart the launcher for the new build to appear.
Epic says version 5.8 prioritizes performance and stability, although it still ships with several new features — most notably an experimental mesh-based terrain editor. Additionally, MegaLights and Audio Insights have moved to Production Ready status.
⚠️ Preview builds are still under heavy and active development, and are therefore considered unstable. If you want to test an existing project, we highly recommend making a copy first.