I signed up to try it this weekend and they gave me my own jupyterlab instance with a getting started notebook in ~5 minutes.

I thought it was odd at first that they weren't letting me run it locally too, but if they control the compute environment then they can force push interpreter(?)/compiler updates and eliminate a lot of bug reports from folks that are just using an out of date build. Seems pretty reasonable to me for something that's so early in development.