Please stabilize sys-apps/portage-2.1.11.62. The most important fixes in this release are for bug 461464 (trigger autounmask as necessary for rebuilds involving subslots), bug #465638 (libpng update triggers blockers + slot-operator slot conflict), and an issue with repoman which randomly triggers incorrect handling of package.use.stable.* (see http://git.overlays.gentoo.org/gitweb/?p=proj/portage.git;a=commit;h=4c150f56c762cde82abd62754c9d48686a5c74be). Bug 462382 tracks all bugs fixed since 2.1.11.55.
Stable for HPPA.
amd64: pass
amd64 stable
x86 stable
alpha stable
arm stable
ia64 stable
ppc stable
ppc64 stable
s390 stable
sh stable
sparc stable
Next stable is bug 472540.