=x11-themes/gtk-engines-xfce-2.2.0 is wrong. It should either be >=, or specify the new engine include in this RC, which is 2.2.2. Also, the new gtk-engines-xfce-2.2.2 ebuild is missing from portage. Reproducible: Always Steps to Reproduce: 1. 2. 3.
RC1 is no longer in portage, and 4.1.99.2 depends on =x11-themes/gtk-engines-xfce-2.2.3
this shouldn't be an issue with RC2 or RC3