I've noticed that an ebuild for gnome-base/gnome-3.14.0 has made it's way into portage, but gnome-light hasn't been bumped to 3.14.0 yet.
+*gnome-light-3.14.0 (30 Dec 2014) + + 30 Dec 2014; Gilles Dartiguelongue <eva@gentoo.org> + +gnome-light-3.14.0.ebuild: + Version bump for Gnome 3.14, bug #534040. + I always forgot this one. Thanks for reporting.