You can check to see if a new version of 33 RPM is available by selecting Check For Updates... from the 33 RPM menu. If a new version is available, you will be notified. Click the Install Update button to automatically download and install the latest version of 33 RPM. If you do not want to install the new version right away, you can click on the Remind Me Later button.

Selecting the Automatically check for updates check box in the Preferences window enables 33 RPM to check for a new version when the program is launched.