There are some exciting things on the horizon for X.org (http://www.x.org), KDE (http://www.kde.org), and Gnome (http://www.gnome.org):
Xgl (http://www.freedesktop.org/wiki/Software_2fXgl)
Plasma for KDE (http://plasma.bddf.ca/)
Luminocity for Gnome (http://www.gnome.org/~seth/blog/xshots)


