It's too early to release a demo. I can say with confidence that everything Andrew and I have shown people are the only parts that are working (to various degrees).

I create a new demo site every week. It's still very broken and unsuitable for the public beyond these controlled demos. It's understandable, a lot of things have been rewritten or removed entirely. For example, the language system has been updated to include a new way to manage languages.

There's nothing stopping anyone from downloading see more the latest code and attempting an install. You'll need to add some missing files to get through the installation, and a lot of other pages will simply not work, but you can still preview some features, like the new studio (mostly concept code for now, nothing functional).