In our case we need Linux because the software we use only run there or is better integrated. Infact we use WSL for the core activities, bit WSL is crap.

Yep, Ubuntu was mentioned as an example in a few meetings and I think they will end up doing that. And it's fine, give me literally anything other than Windows and I will be happy, however I'm a spoiled kid, so I also don't really want Ubuntu.

As far as I remember, they said in some reddit post that the theming will be shared.