We are pleased to announce two new PLUMED releases.
Release 2.1.5 is the last maintenance release on the 2.1.x branch with a few fixes, see: http://goo.gl/22zpFI.
Release 2.2.1 is a maintenance release on the 2.2.x branch that contains a few fixes and a new enhanced sampling method, see: http://goo.gl/2GFaco. This should be considered the stable plumed version.
Notice that branch 2.1.x will not be maintained anymore, so users are encouraged to upgrade to the new 2.2.x release. Just read carefully the change log before upgrading.
You can find both releases in the download section of the plumed webpage. They are also tagged on github (v2.1.5 and v2.2.1).