I wonder if it's usable from an iPad. I haven't tried an online ide before, but if it works well it could be a great mobile development tool.

It would be awesome if this could be setup as a backend for vim as well. Given how well Coc.vim integrates with VSCode tooling, I'm cautiously optimistic.

That's correct it's usable from an iPad during the beta. There are a few known issues but we're planning on addressing those so that we can support this workflow (I work as the product lead on Codespaces).

Super excited to hear this, I had the exact same question reading the page. Any chance you'd be willing to slip us a peak on when we could reasonably (even a Qx ballpark) on when Beta begins?