Please stabilize xfce-base/xfce4-settings-4.6.3-r1 as earlier versions do not work with x11-libs/libXi-1.3 which is going to be stable in bug 308521.
yes, the revision is designed for new X.org, so add arches here at the same time with xorg's bug
I will add this package to the X.org stabilization list. *** This bug has been marked as a duplicate of bug 308521 ***