| Release Date | May 27, 2025 |
|---|---|
| Release Owner | Ryan VanderMeulen |
| Corresponding ESR releases | 128.11.0 · 115.24.0? |
| Nightly cycle length | 4 weeks |
| Beta cycle length | 4 weeks |
| Bugs fixed in nightly | 1616 |
| Uplifts in beta | 145 (2 backouts) |
| Uplifts in RC | 13 (0 backouts) |
| Uplifts in dot releases | 25 (0 backouts) |
| Total number of uplifts | 183 |
| Betas | 10 |
| Release Candidates | 2 |
| Dot releases | 4 |
| Release notes | Consumer notes ⁘ Developer notes |
| Key Milestones | |
|---|---|
| Nightly start | April 1 |
| Beta start | April 29 |
| 139.0 | May 27 |
| 139.0.1 Desktop-only | May 29 |
| 139.0.2 Android-only | June 3 |
| 139.0.3 Android-only | June 4 |
| 139.0.4 | June 10 |