Changes

 A single content As of Firefox 54+ (early 2017), our Multi-Content process model is currently being tested on Nightly, (2 processes). Four content processes will be enabled on 54 Aurora and if stable enough, we will begin to roll it out in Firefox 54 Beta channelsexperiments. See the The schedule below for planned covers the rollout to release. A multiple content process model (for both e10s single and e10s-multi) will roll out in a follow up release. View the [https://wiki.mozilla.org/Electrolysis/Multiple_content_processes Multiple Content Process] wiki page for more informationabout release milestones, release criteria, and a gradual roll-out schedule.