Claims: Firefox and Thunderbird hit the fortnightly release treadmill

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1. title: Firefox and Thunderbird hit the fortnightly release treadmill (alleges; supported) Source
2. url: https://www.theregister.com/software/2026/09/02/firefox-and-thunderbird-hit-the-fortnightly-release-treadmill/5293953 (alleges; supported) Source
3. summary: Mozilla's Firefox 155 and subsidiary MZLA's Thunderbird 155 have arrived. Yes, already. Firefox officially debuted yesterday, although The Reg FOSS desk wasn't offered the upgrade until early evening. Thunderbird followed several hours later. If this seems soon after the previous releases, that's because it is. Mozilla announced Firefox's new fortnightly cadence in July, and MZLA subsequently confirmed that Thunderbird would keep pace. September marks the start of the accelerated schedule. Much… (alleges; supported) Source
4. published: Wed, 02 Sep 2026 16:53:46 +0200 (alleges; supported) Source