Mozilla plans to release an Extended Support Release (ESR) version of Firefox, designed for use by enterprises and organizations that centrally manage their Firefox deployments.

Releases of the ESR will occur once a year, providing these organizations with a version of Firefox that receives security updates but does not make changes to the Web or Firefox Add-ons platform. According to Mozilla, the ESR balances enterprises' needs for latest security updates with the desire to have a lighter application certification burden.

Mozilla's ploicy to providing updates to Firefox more frequently created challenges for organizations that have to deliver lots of mission-critical applications through Firefox.