The software automatically checks for updated versions.  If you would like to check manually: 

On Windows 7, go to: Start -> All Programs -> GenArts Sapphire OFX -> Check for SapphireOFX Updates.
On Windows 8, search for GenArts Sapphire OFX -> Check for SapphireOFX Updates.
On Mac, go to: /Applications/GenArtsSapphireOFX/Check for Sapphire OFX Updates.
On Linux, open a shell window, and type su to become root. Then type the following command: /usr/genarts/SapphireOFX/update-check

Notifications are also made available through standard GenArts communications, (e.g., newsletters or other email communications.)