Request to bump the ebuild of asterisk-core-sounds from 1.4.22 to the current upstream release which is 1.6.1: http://downloads.asterisk.org/pub/telephony/sounds/releases/ Changelog can be found within the upstream tarball. I have tested this by renaming the ebuild and it upgraded with no obvious issues.
https://github.com/gentoo/gentoo/pull/13587 Was just merged. I buggered up the Closes: header, but this is handled now.