| Release Date | August 10, 2021 |
|---|---|
| Release Owner | Pascal Chevrel |
| Corresponding ESR releases | 91.0.0 ⁘ 78.13.0 |
| Nightly cycle length | 6 weeks |
| Beta cycle length | 4 weeks |
| Bugs fixed in nightly | 1491 |
| Uplifts in Beta | 121 (5 backouts) |
| Uplifts in RC | 5 (1 backout) |
| Total number of uplifts | 126 |
| Betas | 9 |
| Release Candidates | 2 |
| Dot releases | 2 |
| Release notes | Consumer notes ⁘ Developer notes |
| Key Milestones | |
|---|---|
| Nightly start | June 1 |
| Beta start | July 13 |
| 91.0 | August 10 |
| 91.0.1 | August 17 |
| 91.0.2 | August 24 |