Most importantly, the new Python versions provide ${EPYTHON}-config like upstream suggests. It'd be great if we could make the eclass request those, and let people just use it in the ebuilds.
Sounds good to me.
Quickly committed: + 09 Oct 2013; Michał Górny <mgorny@gentoo.org> python-utils-r1.eclass: + Bump dependencies on Python interpreters to require newest stable versions. + Bug #463532.