Hi I just found Joanna Rutkowska’s blog post Qubes Air: Generalizing the Qubes Architecture where she states that that is the next step for Qubes-OS. The article was written in 2018. So, I wonder whether that’s still the objective; getting Qubes in the cloud? Really?
Development seems to have been going slowly but steadily. As far as I’m aware, the biggest refactor towards that goal is the new GUI Domain. If you haven’t already, you should read this: