If you are on the "development" branch, the "June, 10 2018" upgrade process needs some manuel helps:
check
We need to delete the 'mesa' package, update the 'wayland' package then reinstall the 'mesa' package:
sudo cards remove mesa
sudo cards install wayland
sudo cards install mesa
You can then launch the upgrade process for the rest:
sudo cards upgrade
or reboot your machine if you did choose to accept automatic upgrade (not really recommended on the "development" branch)