This is great but it's not clear to me from the article to which Plasma version these fixes and updates are for, 6.0 or 5.27.10, or both, as the article mention

This is great but it's not clear to me from the article to which Plasma version these fixes and updates are for, 6.0 or 5.27.10, or both, as the article mentions both. I'm asking because I'd like to give KDE with these latest changes a spin in a VM, since last time when I tried Kubuntu I saw some annoying UI glitches so maybe those are fixed but there's no mention on the blog how to get their latest changes to try them out. Maybe Arch or Tumbleweed?