On Twitter, a Canonical employee promoting Ubuntu in WSL and Hyper-V, video of Microsoft Word and Excel running on Ubuntu 20.04 without Wine and WSL.
Launch MS Word as βThe program runs quite quickly on a system with an Intel Core i5 6300U processor with integrated graphics. It's not running through Wine, it's not Remote Desktop/Cloud or GNOME running in a WSL environment on Windows. This is what I created. Next step: I plan to add working file associations." About MS Excel developer "File associations have been added. Work with the Windows environment/virtual machine is done via SSH.β
Currently the author , says that this is his personal project and there is no talk of official porting. How this is all implemented is not specified, but We are talking about a light form of virtualization in the Linux environment, which, among other things, allows you to work with the clipboard and allows you to open programs from Windows in Linux directly.
Source: opennet.ru