No, we don't have a demo yet. Nothing we'd want to circulate until we're closer to release anyway. I didn't actually know you did cover disks. It's certainly something we'd be interested in contributing to when the time is right though.
No prob. we publish every 2nd month, a good way to announce the demo, and we can coordinate so a simultaneous itch.io launch also, etc. My email: jazzcat64@gmail.com