| Release Date | June 24, 2025 |
|---|---|
| Release Owner | Donal Meehan |
| Corresponding ESR releases | 140.0.0 ⁘ 128.12.0 |
| Nightly cycle length | 4 weeks |
| Beta cycle length | 4 weeks |
| Bugs fixed in nightly | 0 |
| Uplifts in Beta | 164 (0 backouts) |
| Uplifts in RC | 2 (0 backouts) |
| Total number of uplifts | 166 |
| Betas | 9 |
| Release Candidates | 1 |
| Dot releases | 1 |
| Release notes | Consumer notes ⁘ Developer notes |
| Key Milestones | |
|---|---|
| Nightly start | April 29 |
| Beta start | May 27 |
| 140.0 24% adoption | June 24 |
| 140.0.1 Desktop-only 0% rollout | June 26 |
| Potential mobile 140.0.x | July 1 |
| Planned 140.0.x | July 8 |