With the introduction of the ESR 17.0.0 line, support for the ESR 10.0.x line is scheduled to end 2013 FEB 19.
- 17.0 Release Notes (mainline and ESR both, apparently)
- Firefox mainline
- Extended Support Releases
- Download - 10.0.11 first, scroll down for 17.0
- 10.0.11 Release Notes
- Vulnerabilities