Sauce Labs is updating Firefox GeckoDriver to version 0.31.0 for tests on Firefox versions 90 and later due to a recent change made by Mozilla. To ensure compatibility, users of cross-browser testing on Firefox using Sauce Labs need to update their tests before October 4, 2022. The `--remote-debugging-port` capability is no longer supported in version 0.31.0, which means tests that use this capability will fail if not updated accordingly. Users are advised to update their Firefox tests to use the supported `moz:debuggerAddress` capability and specify the correct GeckoDriver version using the Sauce capability `geckodriverVersion`. Additionally, users can utilize the Sauce Labs Platform Configurator for language-specific guidance on setting capabilities. Users with questions can contact Michelle Chen for assistance.