fidzu : thunderbird

Firefox keeps evolving, and the community continues to play a big part in shaping what's next.

In this edition, you can get an early look at Project Nova through our latest foxfooding opportunity, explore Tab Groups on Android, join the conversation on Mozilla's latest browser choice research, and meet an Outreachy contributor whose journey reminds us why open source thrives through collaboration.

Get ready to dive in!

Hot from the oven: Join Project Nova foxfooding

We teased it in the last edition, and now it's here. Project Nova has finally arrived on Firefox Nightly, and you're invited to be an early tester! Get a look at Firefox's refreshed design as we put the finishing touches on the experience ahead of its broader release later this year. If you're curious about what's coming next, this is your chance to try it out, share your feedback, and help shape the final product.

Learn more

Monthly Community Call today!

Want to ask questions directly to the people working on Firefox? Join us for today's Monthly Community Call, where we'll discuss Project Nova and Firefox performance feature with members of the teams working on these projects. Join the call today, July 29, 2026, at 5:00 PM UTC, and bring your questions!

Watch our livestream

Tab groups arrives on Android

You've been calling out for tab group functionality on Firefox mobile and now Tab Groups have officially arrived on Firefox for Android! Tab Groups make it easier to organize related tabs into color-coded groups for work, travel, shopping, research, or whatever you're browsing. Give it a try, and if you have ideas for how it could be even better, let us know on Mozilla Connect.

Read more

From the Reddit Community

Mozilla recently shared new independent research examining how browser choice is shaped by the design of operating systems. The report explores the obstacles users can encounter when downloading, setting, or continuing to use their preferred browser, and argues that people should be able to choose their browser without unnecessary friction. Read the report, join the discussion, and share your perspective!

And of course, thanks to you for choosing Firefox!

Access the report

Community spotlight

Every contributor starts somewhere. In a recent blog post, Ananya Shree Sharma reflects on her journey through the Outreachy internship with Firefox. From navigating a large open source codebase for the first time to collaborating with mentors, learning new skills, and shipping meaningful improvements. Her story is a reminder that open source is as much about learning, mentorship, and community as it is about writing code. If you've ever wondered what it feels like to contribute to Firefox, Ananya's reflections offer an inspiring look at the experience and the people who make it possible.

Read more

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29 Jul 2026 9:04am GMT

Bugs resolved in Moz-Phab 2.15.4:

• bug 2058150 moz-phab patch crashes with KeyError when a stack relative is not visible to the user

Discuss these changes in #engineering-workflow on Slack or #Conduit Matrix.

1 post - 1 participant

Read full topic

27 Jul 2026 4:15pm GMT

This past May, we shared our vision for the future of Firefox. Starting today, you can try out the next design evolution of Firefox in Nightly.

It's still Firefox, now with a more cohesive look and feel across tabs, menus, panels, and other browser surfaces. You'll notice softer tab shapes, a warmer color palette, updated icons, and - after hearing from many of you - the return of Compact Mode and new theme options to make Firefox your own.

Many of you have already spotted pieces of the new design in Nightly over the past few months. Now they're coming together into one complete experience.

You'll continue to see updates over the coming weeks as we polish the new Firefox design before it reaches Firefox users more broadly later this year. As you browse, we're especially interested in any visual or functional issues you encounter.

Keep an eye out for things like:

• Icons, spacing, and alignment
• Themes and personalization
• Different window sizes and display scaling
• Keyboard navigation
• Screen readers and other accessibility features
• Different languages and layouts

Found a bug?

If something doesn't look or behave as expected, please file a bug in Bugzilla.

When possible, include:

• Steps to reproduce the issue
• Screenshots or screen recordings
• Your operating system and Nightly version

If you have broader thoughts or questions about your experience, join the discussion on Mozilla Connect.

Thanks for using Nightly and helping us improve Firefox. Every bug report helps us identify issues and continue refining the new Firefox design before it reaches Firefox users more broadly later this year.

27 Jul 2026 3:00pm GMT