We are pleased to announce that the latest release of the Plant Ontology, version #21, is now available on our browser at http://www.plantontology.org
One major change you may see is that on August 1, 2015, all the ontology files and issue tracker were moved to a shiny new GitHub Site: (https://github.com/Planteome/plant-ontology) as part of the Planteome Project. Please update your local browser bookmarks, and come check out the new functionalities.