Mozilla Evidence

Admin reference: two-weekly major releases from Firefox 155

Catalog row in Vendor License Evidence · Cited

Kind: Documentation excerpt
Excerpt: "Beginning with Firefox 155 (September 2026), a new major release is made every two weeks."
Locator: Firefox administrator reference, Firefox release channel
Applies to: Firefox ESR: a new major version each year, with security updates only
Supports rules: Firefox ESR: a new major version each year, with security updates only
Sources: Firefox administrator reference: Firefox and Firefox ESR