Bionic Beaver, the codename for the next Ubuntu LTS release, is due in April 2018 and will ship with both the traditional Xorg graphics stack as well as the newer Wayland based stack, but Xorg will be the default.
Why opt for Xorg by default? There are three main reasons:
- Screen sharing in software like WebRTC services, Google Hangouts, Skype, etc works well under Xorg.
- Remote Desktop control for example RDP & VNC works well under Xorg.
- Recoverability from Shell crashes is less dramatic under Xorg.