Ubuntu, GNOME and Wayland

The news of Ubuntu rejoining the GNOME fold is obviously a large, and undoubtedly difficult, decision that will have ramifications for years to come. For developers, a lot of the differentials in desktop technology (e.g. indicators, menus, scrollbars) between the two may now be at an end, making generic Linux an easier target for ISVs. And, assuming a GNOME Shell port to Mir is not underway, we are back at only supporting two window systems: X11 and Wayland.