Hi Bill

Thank you so much for your feedback. The vertical tabs feature is still being given some polish but it is so good to hear that you like what we have done so far.

We really appreciate your time spent writing to us and you will be passed back to the team working on the updates to the sidebar in Firefox.

Thanks again...and keep on rocking the open web!

Thanks, Paul. I have a followup question. I just installed 133 on Arch Linux and the vertical tabs feature is not available, at least out of the box. Am I missing something, or do I need to make the about:config changes I've seen on Reddit? Any feedback appreciated. Many thanks!

Hi Bill

Apologies for the delay in responding.

The updates to sidebar and the new vertical tabs feature has only been released to a relatively small number of people for early feedback and while a few small issues are being resolved. We are looking to increase the availability of these features in the near future when you should get a more polished experience.

Message received and understood. Thanks, Paul.