I believe that this was communicated by the Firefox team more than a year ago, so it shouldn't be news to anyone who have been maintaining their extension(s). F

I believe that this was communicated by the Firefox team more than a year ago, so it shouldn't be news to anyone who have been maintaining their extension(s). For all those people who developed something and then moved on to something else, it may seem like that year passed really quickly - and the only option left is to drop the extension.