Up and coming, like it or not, from the Freedesktop project is the X-Window replacement called Wayland. Gentoo is already involved with Wayland although it is still considered experimental.
My concern is whether or not Wayland will totally supplant X-Window or will it exist as an option to X-Window. That is, when Wayland becomes finally ready for prime time, will we all be forced to adopt it with no alternative or will the standard X-Window also be a choice? Another concern centers around all of the udev/dbus stuff which I have so far successfully managed to completely avoid. A second question then is how much will Wayland be dependent on udev? Will it be an option or mandatory? Frank Peters