JEP 425: Virtual threads aka Loom is coming to the Java Platform as a preview in Java 19 after a few years of development.

This is a major event for the reactive world that can redefine how developers write services. How this might happen in practice remains very speculative and we believe there will be a wide spectrum of choice to write those services: from your dad’s classic J2EE servlet/JDBC to a modern event-driven micro service.

On that account, the Vert.x project is launching the virtual thread incubator project to experiment with virtual threads, currently containing an async/await implementation.

The community (i.e. you) is encouraged to test the incubator projects and provide feedback (bugs, missing features, etc.). The incubator is also meant to centralize community experiments with virtual threads. Therefore, it can host any other virtual thread-based project.