Contentteller 2.1.3 released Contentteller 2.1.3 is now available in the members area. This update brings the following 40 improvements and bugfixes: Contentteller members area
what is the best way to update and not to loose site design and template modifications? CT 2.1.0 IPB 3.1.2
Just run the upgrade script. The upgrade script will only add new templates but not overwriting existing ones. However, I always recommend a backup prior to the upgrade. Just in case.