| Last release | January 13, 2026 |
|---|---|
| Latest version | 140.7.0 |
| Firefox | ESR | Old ESR | Shipping date |
|---|---|---|---|
| 2026 ↓ | |||
| 148 | 140.8 | 115.33 | February 24 |
| 149 | 140.9 | ESR 115 branch is EOL March 24 | |
| 150 | 140.10 | April 21 | |
| 151 | 140.11 | May 19 | |
| 152 | 140.12 | June 16 | |
| 153 | 153.0 | 140.13 | New ESR 153 branch! July 21 |
| 154 | 153.1 | 140.14 | August 18 |
| 155 | 153.2 | 140.15 | September 15 |
| 156 | 153.3 | ESR 140 branch is EOL October 13 | |
| 157 | 153.4 | November 10 | |
| 158 | 153.5 | December 8 | |
| 2027 ↓ | |||
| 159 | 153.6 | January 19 | |