You can find a ebuild for specified version bump in kde overlay: http://git.overlays.gentoo.org/gitweb/?p=proj/kde.git;a=tree;f=net-libs/telepathy-qt4;h=1b101ed0807456183f2edfea8c82f72912a725ba;hb=HEAD Reproducible: Always
Bumped to 0.8.0. Thanks for reporting.