- Firefox Nightly 131 introduces vertical tabs and an improved sidebar, enhancing tab management and multitasking for users with many open tabs.
- The vertical tabs feature, similar to Microsoft Edge, keeps tabs organized on the left-hand side and can be customized via Firefox Labs settings.
- Additional features include AI chatbot integration in the sidebar and ongoing development of tab grouping and profile management tools.
Oh, does this replace Tree Style Tabs?
Rather than replace, I’d guess it could be an alternative. The best part of it will be the ability to natively disable the top tab bar instead of needing a janky userchrome css hack that doesn’t even fully work.