Ah, so the "Linux Terminal" app is not yet ready for any announcements. This app with 3D acceleration enabling running graphical linux systems is what I'm waiting for, but it looks like we'll wait another year..
Now, of course they removed the app :) But there's a "linux terminal" app which at least in theory should allow something similar since GPU acceleration was mentioned, but the app is limited "on user builds"..
Note this uses kernel virtualization, so it's faster and more properly separated.