Firefox 155 — lifecycle date releaseDate is now 2026-09-01
For Firefox 155, product is firefox; field changed is releaseDate; new value is 2026-09-01; detected is 2026-09-02, verified against its source on 2026-09-02.
- Product
- firefox verified
- Product label
- Firefox verified
- Release cycle
- 155 verified
- Field changed
- releaseDate verified
- New value
- 2026-09-01 verified
- Detected
- 2026-09-02 verified
What the source says
{"name":"155","codename":null,"label":"155","releaseDate":"2026-09-01"
— endoflife.date, retrieved 2026-09-02
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.