Spoiler: it’s looking great.
The following video (made by the World of GNOME folks) demonstrates the current state of Unity 8 in both its ‘desktop’ (windowed) mode and ‘staged’ (fullscreen/non-windowed) mode.
This video also gives us an early glimpse at how the sliding and swiping gestures used in the phone and tablet experience translate to the mouse-led desktop one.
Hit play on the video below to sate your curiosity. A word of caution for those of you with sensitive musical tastes: you may wish to mute the video first!
Unity is looking good, right?
Neither Unity 8 or Mir ship as the default desktop and display server in Ubuntu 16.04 LTS but that doesn’t mean you can’t try it all out on your computer right now.
How to Install Unity 8 on Ubuntu 16.04
Ubuntu 16.04 LTS makes it possible to install a working preview session of Unity 8, running on the Mir display server.
You can install the Unity 8 preview session alongside the ever-dependable Unity 7 desktop, too. You simply choose which session you want to boot into at the log-in screen.
If you’re running Ubuntu 16.04 LTS you can install the latest Unity 8 preview session right now, straight from the Ubuntu archives.
But — and it’s a big ‘but’ — the Unity8 Desktop Mir session we’re going to install only works with open-source graphics drivers, ideally open-source Intel graphics drivers.
As the Ubuntu Wiki explains: “Proprietary video drivers do not yet offer the required level of support for Mir, so your experience if you’re using the binary block nVidia or AMD drivers will be somewhat disappointing.”
Mir does not currently work in Virtualbox. Milage may vary in other virtual machines (e.g., Parallels, VMWare, Boxes), so if you find a way to get it running in a VM do tell us about!.
Install the session
Open a new Terminal window and run the following command to install the Unity 8 desktop Mir session:
sudo apt install unity8-desktop-session-mir
Let installation complete fully before you move on to the next step.
Add the Stable Phone Overlay PPA
Next you should add the Stable Phone Overlay PPA to your Software Sources.
Although it’s arcane sounding, this archive provides newer bits and pieces of the Unity 8 experience that are ready for use but have yet to land in the stable release archives.
To add it run the following command in a new Terminal window:
sudo add-apt-repository ppa:ci-train-ppa-service/stable-phone-overlay sudo apt update && sudo apt upgrade
Once complete you should reboot your computer (recommended, as changes to LightDM could necessitate it). After reboot simply select the Unity 8 session from the Unity Greeter (login screen) and login as normal.
Bear in mind that Unity 8 and Mir are still under active development and should NOT be considered production ready.
Unity 8 and Mir are both under active development. They’re far from finished and installation is not easy for a reason. See the list of known issues and bugs affecting Mir and Unity 8 desktop mode for further details.