Confusion on current Firefox Beta version for 2026

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Ruben Gomez

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Jun 15, 2026, 2:17:32 PMJun 15
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Hello team, 

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. 
FF Release Canlender 2026-06-15_13-13.png

Ryan VanderMeulen

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Jun 15, 2026, 2:21:09 PMJun 15
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The new cycle starts today but the first build doesn't ship until Wednesday.

Ryan VanderMeulen
Firefox Release Manager

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Ruben Gomez

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Jun 15, 2026, 2:26:21 PMJun 15
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Thank you Ryan, so on Wednesday morning we should be able to download/test firefox-153.0b ? 

Ryan VanderMeulen

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Jun 15, 2026, 2:30:22 PMJun 15
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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

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Jun 15, 2026, 2:36:43 PMJun 15
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Sounds good thanks! 

Looking forward to it!

Ruben Gomez

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Jun 17, 2026, 10:38:15 AM (14 days ago) Jun 17
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Hello Mozilla team,

Download and installed the new https://download.mozilla.org/?os=linux64&product=firefox-beta-latest-sslfirefox-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. 

2026-06-17_09-35.png

Mike Kaply

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Jun 17, 2026, 10:40:27 AM (14 days ago) Jun 17
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Mike Kaply

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Jun 17, 2026, 10:40:50 AM (14 days ago) Jun 17
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And it only shows the first time you start Firefox.

Mike

Ruben Gomez

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Jun 18, 2026, 4:04:02 PM (12 days ago) Jun 18
to enter...@mozilla.org, Mike Kaply, enter...@mozilla.org, Ryan VanderMeulen, Ruben Gomez
Thank you Mike for the link! much appreciated.  

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