Support/Firefox138

Firefox 138 release information

Disclaimer

The following information is intended for members of the Mozilla Support community for the purpose of supporting users in the Mozilla Support platform. Mozilla Support is a community of enthusiastic volunteers and employees trying to support Mozilla's users around the globe. You can join us by contributing through the following ways:

• Answer questions in the support forum
• Write help articles
• Localize support content
• Provide support on social media channels
• Respond to mobile store reviews

Release notes

• Desktop 138.0 Release Notes
• ESR 115.23.0 Release Notes
• ESR 128.10.0 Release Notes
• Firefox for Enterprise 138 Release Notes
• Firefox for developers 138 Release Notes
• Firefox for Android 138.0 Release Notes
• Firefox for iOS 138.0 Release Notes

Bug & feedback boards

• Firefox bug board
• Firefox feedback board

Dot releases

TBD

Contributor discussions

Please refer to the following contributor forum threads to learn more about known issues and discuss with other contributors:

• Desktop release discussion
• Mobile release discussion
• Localization discussion

You can also join our Matrix channel to ask questions/join community discussion.

Stay updated

Apart from sharing release information, there are other ways to stay updated with product release and community updates:

• Community call: We run a monthly community call (usually a week before Firefox release date). Check our schedule here and don't hesitate to join the call in person if you can!
• Firefox pod meeting: If you’re an NDA’d contributor, you can watch the recording of our Firefox Pod Meeting from AirMozilla to catch up with the latest train release. You can also subscribe to the AirMozilla folder by clicking on the Subscribe button in the top-right corner of the page to get notifications each time we add a new recording.
• Newsletter: Consider subscribing to Firefox Daily Digest to get daily updates (Mon-Fri) about Firefox from across the internet.

Content in this page is being updated periodically as we're rolling out the release.

What's new in Firefox 138

Firefox Desktop

Smart Tab Groups
Description:	How to use the smart tab grouping feature, which is an experimental feature in 138.
Content request:	https://bugzilla.mozilla.org/show_bug.cgi?id=1953899
KB article:	https://support.mozilla.org/kb/how-use-ai-enhanced-tab-groups	New article

Accuweather update
Description:	An update to the weather forecast article
Content request:	https://bugzilla.mozilla.org/show_bug.cgi?id=1963191
KB articles:	https://support.mozilla.org/kb/get-your-local-weather-forecast-firefox-address-bar	Article update

Escalation

TBD