News (mainly features/major bug fixes)
+portage-2.1.2
+------------
+
+* Profiles support multiple inheritance.
+* CONFIG_PROTECT and CONFIG_PROTECT_MASK both support files (not just
+ directories).
+* Collision protection handles symlinks properly.
+* Dependencies can be satisfied by installed packages that do not have matching
+ ebuilds in the portage tree or overlay.
+* Emerge automatically ignores blockers that are made irrelevant by an upgrade.
+* Emerge builds a complete dependency graph in order to ensure correct merge
+ order and detection of circular dependencies.
+* The world and system sets allow automatic update of all installed slots.
+* DEPEND atoms support SLOT dependencies of the form ${CATEGORY}/${PN}:${SLOT}.
+
+portage-2.1.1
+------------
+
+* Profiles support use.force, package.use.force, and package.use.mask files.
+
portage-2.1 (ongoing via pre releases)
------------
Release Notes; upgrade information mainly.
Features/major bugfixes are listed in NEWS
+portage-2.1.2
+==================================
+
+* emerge does not necessarily update build time dependencies that are not
+ strictly required. See the --with-bdeps option in the emerge(1) man page.
+
+portage-2.1.1
+==================================
+
+* emerge --search doesn't use regular expressions now anymore by default, so
+ emerge --search dvd+rw-tools now works as expected. Regular expressions can be enabled
+ by prefixing the search string with %.
+* emerge --depclean algorithm is much safer than the old one.
+* emerge --newuse detects changes in IUSE that previously went undetected.
+
portage-2.1
==================================
variable or use the emerge --ignore-default-opts option.
* rsync option handling has been redesigned, instead of RSYNC_* variables
use PORTAGE_RSYNC_EXTRA_OPTS from now on.
+* autouse (use.defaults) has been deprecated by specifying USE_ORDER in make.defaults
+ Users may still turn this back on by specifying USE_ORDER="env:pkg:conf:auto:defaults"
+ in make.conf. Interested in figuring out what use flags were turned off? Check out
+ /usr/portage/profiles/base/use.defaults and other use.defaults files that correspond
+ to your profile.
+