Proposed public time table
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add-on / e10s / Legacy Deprecation in 2017
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DateNightlyAuroraBetaRelease% of Fx usersSubmissions Criteria
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2016-09-19Fx 52Fx 51Fx 50Fx 49: 10 MPC=True and webextensions add-ons with e10s4%
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2016-11-14Fx 53Fx 52Fx 51Fx 50: All MPC=True and webextension get e10s7%
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2017-01-24Fx 54: Sandboxing and multi content processes [A]Fx 53Fx 52: All but MPC=FalseFx 51: everything from Fx50 and ~750 add-ons not marked MPC=True [B]. 14%
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2017-03-07Fx 55Fx 54: Sandboxing and multi content processes [A]Fx 53: All but MPC=False [B]Fx 52: Expansion over next 2 releases is based on progress on roll-back options [B]NPAPI info and links
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2017-04-18Fx 55Fx 54: Sandboxing and multi content processes [A]. Disable direct CPOW access. [4]
Fx 53: All but MPC=False get e10s [1]est 34%Submissions: Stop accepting new Legacy [2] add-ons (still accepting Legacy updates). New Webextensions only. add info about ctypes into timing - links
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2017-06-12Fx 57: Stop running Legacy add-ons (no MPC=False add-ons and remove e10s compatibility shims). [C]Fx 56Fx 55Fx 54: Sandboxing and multi content processes [A]. Goal is to have webextension only add-ons in Nightly June...authors have 5 months to get to webextensions or won't run on Firefox.
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2017-08-07Fx 58Fx 57: Stop running Legacy add-ons (no MPC=False add-ons and remove e10s compatibility shims). [C]Fx 56: Beta supporting only webextensions.Fx 55
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2017-10-02Fx 59Fx 58Fx 57: Stop running Legacy add-ons (no MPC=False add-ons and remove e10s compatibility shims). [C]Fx 56
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2017-11-15Fx 60Fx 59Fx 58Fx 57: Stop running Legacy add-ons (no MPC=False add-ons and remove e10s compatibility shims). Heavy Weight Themes no longer supported [C]est 38%Submissions: stop accepting Legacy add-ons updates. Only webextensions and updatese to webextensions
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[A] will put link to blog that explains this - in progress https://docs.google.com/document/d/1_EynR-5y9xqg3oAuERCVkJJApnbQ5iHwPJkVuHt6U2E/edit#
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[B] add-on/e10s status wiki goes into details of the release plans and is updated based on Beta results https://wiki.mozilla.org/Firefox/AddOns/Status/current#Add-ons.2Fe10s_Program_Status_Report and https://wiki.mozilla.org/Electrolysis#Add-ons_Schedule
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[C] need to link out to blog on details of this - starting ASAP in nightly... so find breaks now
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[1] if add-ons are reported not working (functionality or impactig firefox) there are _ options.... We can ....
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[2] define legacy
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[4] Direct CPOW access was not expected and not initially blocked with MPC=True. There were ~60 add-ons that did this. It was fixed so no new ones could and temporary "allow" list for add-ons that did. That will be removed in Beta 54, but then ride to Release 55.
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2017
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