Firefox 156 — lifecycle date releaseDate is now 2026-09-15
For Firefox 156, product is firefox; field changed is releaseDate; new value is 2026-09-15; detected is 2026-09-16, recorded from its source on 2026-09-16; source re-checked 2026-10-26.
- Product
- firefox
- Product label
- Firefox
- Release cycle
- 156 verified
- Field changed
- releaseDate verified
- New value
- 2026-09-15 verified
- Detected
- 2026-09-16 our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
{"name":"156","codename":null,"label":"156","releaseDate":"2026-09-15"
— endoflife.date, retrieved 2026-09-16
Source
- endoflife.datehttps://endoflife.date/api/v1/products/firefox
This one changes, and we watch it.Software end-of-life date changes — which dates moved and what they were before is re-read on a schedule and every change is dated. Subscribe: Atom feed · JSON · what has changed so far.