Mir 1.0 Is Pulled Back, Now It's Mir 0.28
While we've long been told that Mir 1.0 would happen for Ubuntu 17.10 -- even as recently as last month> -- and then earlier this week was a Mir 1.0 tag and the v1.0.0 milestone in Launchpad, that version is being pulled back in favor of calling it Mir 0.28.
Even following the decision to drop the grand Unity 8 + Mir plans, Mir 1.0 was still a target for the "Artful Aardvark" and their revised plan around the remaining Mir developers has been adding Wayland client support. That initial Wayland client support in Mir is in place albeit still fairly basic but should get better over time. We haven't seen Mir Vulkan support or other previously talked about changes for Mir 1.0, including the dropping of their old APIs, etc.
For reasons not disclosed publicly, they have decided against proceeding with the Mir 1.0.0 release and have now called it Mir 0.28. The 1.0.0 milestone in Launchpad has been moved to 0.28.0.
Within Mir's Bazaar code was even the 1.0 tag, but that looks like it will be bumped back to 0.28.
Canonical's Alan Griffiths simply commented today, "For the last six months we’ve been working on, and talking about “Mir 1.0”. But today’s Mir release is not going to be called “1.0” it will be called “0.28”. The code is the same, just the name has changed."
We'll see if "Mir 1.0" now comes for Ubuntu 18.04 LTS or what their latest plan is for this Ubuntu-centered display server.