If you look at ${PORTDIR}/profiles/ChangeLog, you’ll see the following:
10 Oct 2008; Marcus D. Hanwell <cryos@gentoo.org> package.mask:
Unmasked KDE 4.1.2 and associated dependencies/extras at long last. Sorry
about the delay!
So, you can now have fun upgrading to 4.1.2 without having to unmask the packages. Everyone currently using the kde-testing overlay for 4.1.2, should stop using it as we’re removing all 4.1.2 packages that are put in the tree. For the moment, we’ll keep a few misc packages in the overlay, including koffice that was recently added and amarok-1.92.2 until it’s fixed to work with mysql/e.
Anyone upgrading should read carefully the KDE 4.X guide. Pay particular attention to the sets section and to some caveats while updating from previous 4.1.1 ebuilds offered through the overlays.