Release notes for OLAT 6.0 and minor releases OLAT 6.9.0 Release Notes OLAT 6.8.0 Release Notes OLAT 6.7.0 Release Notes OLAT 6.6.0 Release Notes OLAT 6.5.0 Release Notes OLAT 6.4.0 Release Notes OLAT 6.3.0 Release Notes OLAT 6.2.0 Release Notes OLAT 6.1.0 Release Notes OLAT 6.0.0 Release Notes