Confusion on current Firefox Beta version for 2026

[Ruben Gomez]

Hello team, 

According to https://whattrainisitnow.com/calendar/

Firefox Beta version 153.0  should have been released, but instead what we got today was FF beta version 152.0, is that correct? 

https://www.firefox.com/en-US/firefox/152.0beta/releasenotes/

Just want to make sure we aren't downloading/using the wrong version to test. 

[Ryan VanderMeulen]

The new cycle starts today but the first build doesn't ship until Wednesday.

https://whattrainisitnow.com/release/?version=153

Ryan VanderMeulen

Firefox Release Manager

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[Ruben Gomez]

Thank you Ryan, so on Wednesday morning we should be able to download/test firefox-153.0b ? 

[Ryan VanderMeulen]

It is probable that 153.0b1 will be available by mid-day CEST on Wednesday, but the exact timing is TBD.

Thanks for testing out Beta!

-Ryan

[Ruben Gomez]

Sounds good thanks! 

Looking forward to it!

[Ruben Gomez]

Hello Mozilla team,

Download and installed the new https://download.mozilla.org/?os=linux64&product=firefox-beta-latest-ssl - firefox-152.0b10.tar.xz

Is the new "Welcome to Firefox" really necessary? For companies 100 thousands of workstations/machines, it's a lot to see every time Firefox starts/restarts. 

[Mike Kaply]

Yes, that's our terms of service.

There's a policy to turn it off.

https://firefox-admin-docs.mozilla.org/reference/policies/skiptermsofuse/

Mike

To view this discussion visit https://groups.google.com/a/mozilla.org/d/msgid/enterprise/c04f76e5-80a0-48f6-9613-d7a0dbcf0787n%40mozilla.org.

[Mike Kaply]

And it only shows the first time you start Firefox.

Mike

[Ruben Gomez]

Thank you Mike for the link! much appreciated.  

We clear our cache on startup/reboot, so every time is the first time. 

[Ruben Gomez]

Hello again, 

How come the new Beta version is 154? should it not be 153.1.0? 
As is posted in the calendar https://whattrainisitnow.com/calendar/ ? 

[Mike Kaply]

On Wed, Jul 22, 2026 at 4:07 PM Ruben Gomez <rigo...@gmail.com> wrote:

Hello again, 

How come the new Beta version is 154? should it not be 153.1.0? 
As is posted in the calendar https://whattrainisitnow.com/calendar/ ? 

Betas are for major Firefox releases, and the next major version is 154.

An ESR update, 153.1.0, will be released at the same time

We don't have betas for ESR releases.

Mike