You can add and host multiple versions of Rational Statemate on the same system. Before you add a later version of Rational Statemate, you do not need to remove earlier versions. For example, if you currently have Rational Statemate 3.3 and/or 4.0 on your system, you can host that version on your system and add Rational Statemate. By default, Rational Statemate creates a new directory with the name of the current release number when you upgrade.