Mozilla: The Future of Developing Firefox Add-ons

Mozilla has announceda significant set of changes for authors of Firefox add-ons. These includea new API (and the deprecation of XUL and XPCOM), a process-basedsandboxing mechanism, mandatory signing of extensions, and more."For our add-on development community, these changes will bringbenefits, like greater cross-browser add-on compatibility, but will alsorequire redevelopment of a number of existing add-ons. We're making a biginvestment by expanding the team of engineers, add-on reviewers, andevangelists who work on add-ons and support the community that developsthem. They will work with the community to improve and finalize theWebExtensions API, and will help developers of unsupported add-ons make thetransition to newer APIs and multi-process support."