{"id":8270,"date":"2017-10-03T14:08:25","date_gmt":"2017-10-03T21:08:25","guid":{"rendered":"http:\/\/blog.mozilla.org\/addons\/?p=8270"},"modified":"2018-09-03T12:38:06","modified_gmt":"2018-09-03T19:38:06","slug":"legacy-add-on-support-on-firefox-esr","status":"publish","type":"post","link":"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/","title":{"rendered":"Legacy Add-on Support on Firefox ESR"},"content":{"rendered":"<p><strong>Update:<\/strong> the next ESR was moved to coincide with Firefox 60 instead of 59.<\/p>\n<p>Earlier this year, we shared with you our<a href=\"https:\/\/blog.mozilla.org\/addons\/2017\/02\/16\/the-road-to-firefox-57-compatibility-milestones\/\"> compatibility plan for Firefox<\/a>. As anticipated, Firefox 57 will be released in<a href=\"https:\/\/wiki.mozilla.org\/RapidRelease\/Calendar\"> late November<\/a>, only allowing add-ons using the WebExtensions API. However, we have received some questions from developers on how this timeline applies to the Firefox Extended Support Release (ESR).<\/p>\n<p>To clarify how legacy extensions will work with the ESR release:<\/p>\n<ul>\n<li>ESR 52 will be the last ESR release that supports legacy add-ons. Support for ESR 52 officially ends on August 2018.<\/li>\n<li>The following ESR release (60), and any subsequent release, will not support legacy add-ons. There will be no override provided for this behavior.<\/li>\n<\/ul>\n<h3>AMO Support<\/h3>\n<p>AMO (<a href=\"https:\/\/addons.mozilla.org\/?utm_source=blog.mozilla.org&amp;utm_medium=post&amp;utm_campaign=2017-10-esr\">addons.mozilla.org<\/a>) will continue to support legacy add-on listings throughout the ESR 52 cycle. However, AMO will primarily focus on WebExtension add-on listings. This means some legacy features may also change during this time period. There are big changes coming to AMO, including a completely new design. Stay put for more updates on this.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Update: the next ESR was moved to coincide with Firefox 60 instead of 59. Earlier this year, we shared with you our compatibility plan for Firefox. As anticipated, Firefox 57 &hellip; <a class=\"go\" href=\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/\">Read more<\/a><\/p>\n","protected":false},"author":173,"featured_media":8108,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[388,44,278886],"tags":[17,278877,278873,28087,288923,278871],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Legacy Add-on Support on Firefox ESR - Mozilla Add-ons Community Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jorge Villalobos\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/\",\"url\":\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/\",\"name\":\"Legacy Add-on Support on Firefox ESR - Mozilla Add-ons Community Blog\",\"isPartOf\":{\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blog.mozilla.org\/addons\/files\/2017\/03\/addons-puzzle-fox.png\",\"datePublished\":\"2017-10-03T21:08:25+00:00\",\"dateModified\":\"2018-09-03T19:38:06+00:00\",\"author\":{\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/a098261b4b5510d408ff31f492606925\"},\"breadcrumb\":{\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#primaryimage\",\"url\":\"https:\/\/blog.mozilla.org\/addons\/files\/2017\/03\/addons-puzzle-fox.png\",\"contentUrl\":\"https:\/\/blog.mozilla.org\/addons\/files\/2017\/03\/addons-puzzle-fox.png\",\"width\":220,\"height\":220,\"caption\":\"Add-ons logo\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/blog.mozilla.org\/addons\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Legacy Add-on Support on Firefox ESR\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#website\",\"url\":\"https:\/\/blog.mozilla.org\/addons\/\",\"name\":\"Mozilla Add-ons Community Blog\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blog.mozilla.org\/addons\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/a098261b4b5510d408ff31f492606925\",\"name\":\"Jorge Villalobos\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/6d1966118f16e4b99a6e3ad07883be33?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/6d1966118f16e4b99a6e3ad07883be33?s=96&d=mm&r=g\",\"caption\":\"Jorge Villalobos\"},\"description\":\"Jorge is the Product Manager for addons.mozilla.org\",\"url\":\"https:\/\/blog.mozilla.org\/addons\/author\/jvillalobosmozilla-com\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Legacy Add-on Support on Firefox ESR - Mozilla Add-ons Community Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/","twitter_misc":{"Written by":"Jorge Villalobos","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/","url":"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/","name":"Legacy Add-on Support on Firefox ESR - Mozilla Add-ons Community Blog","isPartOf":{"@id":"https:\/\/blog.mozilla.org\/addons\/#website"},"primaryImageOfPage":{"@id":"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#primaryimage"},"image":{"@id":"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#primaryimage"},"thumbnailUrl":"https:\/\/blog.mozilla.org\/addons\/files\/2017\/03\/addons-puzzle-fox.png","datePublished":"2017-10-03T21:08:25+00:00","dateModified":"2018-09-03T19:38:06+00:00","author":{"@id":"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/a098261b4b5510d408ff31f492606925"},"breadcrumb":{"@id":"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#primaryimage","url":"https:\/\/blog.mozilla.org\/addons\/files\/2017\/03\/addons-puzzle-fox.png","contentUrl":"https:\/\/blog.mozilla.org\/addons\/files\/2017\/03\/addons-puzzle-fox.png","width":220,"height":220,"caption":"Add-ons logo"},{"@type":"BreadcrumbList","@id":"https:\/\/blog.mozilla.org\/addons\/2017\/10\/03\/legacy-add-on-support-on-firefox-esr\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/blog.mozilla.org\/addons\/"},{"@type":"ListItem","position":2,"name":"Legacy Add-on Support on Firefox ESR"}]},{"@type":"WebSite","@id":"https:\/\/blog.mozilla.org\/addons\/#website","url":"https:\/\/blog.mozilla.org\/addons\/","name":"Mozilla Add-ons Community Blog","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blog.mozilla.org\/addons\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/a098261b4b5510d408ff31f492606925","name":"Jorge Villalobos","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/blog.mozilla.org\/addons\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/6d1966118f16e4b99a6e3ad07883be33?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/6d1966118f16e4b99a6e3ad07883be33?s=96&d=mm&r=g","caption":"Jorge Villalobos"},"description":"Jorge is the Product Manager for addons.mozilla.org","url":"https:\/\/blog.mozilla.org\/addons\/author\/jvillalobosmozilla-com\/"}]}},"_links":{"self":[{"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/posts\/8270"}],"collection":[{"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/users\/173"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/comments?post=8270"}],"version-history":[{"count":0,"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/posts\/8270\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/media\/8108"}],"wp:attachment":[{"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/media?parent=8270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/categories?post=8270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.mozilla.org\/addons\/wp-json\/wp\/v2\/tags?post=8270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}