Multiprocess will be enforced for all add-ons with version 51 that is released January 24.
One thing seriously worries me. With a fresh Firefox profile and a fresh install of Firefox version 51 beta, multiprocess is disabled even with no add-ons installed.
From the about:support page I get the message “0/1 (Disabled by accessibility tools)”. (All accessibility features from about:preferences#advanced are disabled by the way…)
Does this mean that Firefox version 51 will ship without multiprocess support for accessibility tools?
Will my users need to fiddle with about:config settings to enable multiprocess and make my add-on work?
Do anyone know when conflicts between accessibility tools and multiprocess will be resolved?