This release resolves a speaker selection compatibility issue with iTunes 8, a display issue on Nokia internet tablets, and includes a number of other minor bug fixes. The complete list of changes is available in the release notes.
Note for Leopard users: Signal’s application binary is now signed by a trusted certificate authority, allowing it to be added to the system firewall rules automatically. If you have manually added a previous version of Signal to the firewall you may be prompted to re-authorize it, or in some cases you may need to remove Signal under System Preferences > Security > Firewall and then launch the new version.
Signal 1.1.3 is available via software update and direct download.