The new Kickstarter update has information including on the release. https://www.kickstarter.com/projects/se ... ts/2721037
In short, "release candidate 1" for the PC version should be ready in January. Depending on the test results, we may proceed with release, or create revised versions.
Once a stable version is ready, then the PC version will be released. The second step is to create the Dreamcast version based on the latest updated/patched version.