The first stable release of the 2.3 series, emc2.3.0.
Read the changelog  for an extensive list of new features/fixes.
You can get it: as a source package from sourceforge , from Git , or as a precompiled package which works on Ubuntu as described here. (more)

Because this version is incompatible with emc 2.2.8 in several minor ways, it will not automatically be installed as an upgrade.
For more information and installation/upgrade instructions, please see UpdatingTo2.3  

Many thanks to all the contributors who have been working over the course of many months to deliver the many improvements in this release.