We are pleased to announce that the release of MapGuide Open Source 4.0 is now available Release notes: http://trac.osgeo.org/mapguide/wiki/Release/4.0.0/Notes Downloads: http://trac.osgeo.org/mapguide/wiki/Release/4.0.0/Notes#Downloads If you find a defect, please report it using http://trac.osgeo.org/mapguide