Released about 2 weeks ago - nothing groundbreaking AFAICT.
Bumped, thanks for noticing. +*gtk+-2.24.17 (19 Mar 2013) + + 19 Mar 2013; Alexandre Rostovtsev <tetromino@gentoo.org> + -gtk+-2.24.15.ebuild, +gtk+-2.24.17.ebuild: + Version bump with file chooser fixes (bug #462174, thanks to Rafał + Mużyło). Drop old.
I still have this issue of wrong file chooser in x11-libs/gtk+-2.24.17. It could be fixed only by updating to gtk+-2.24.18. Had similar issue in Fedora and it was rectified only by updating to gtk+-2.24.18. https://bugzilla.redhat.com/show_bug.cgi?id=845040