Janet, the Compatibility View is not shipping yet. So it should at least be a note about that in https://developer.mozilla.org/docs/Mozilla/Firefox/Releases/77. Normally, it shouldn't be mentioned there at all because only features released in Stable Firefox are listed there, though I guess it's good to mention it there to get some more feedback. Sebastian
Bug 1625134 Comment 8 Edit History
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Janet, the Compatibility View is not shipping yet. So it should at least be a note about that in https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/77. Normally, it shouldn't be mentioned there at all because only features released in Stable Firefox are listed there, though I guess it's good to mention it there to get some more feedback. Sebastian