About a year ago the Whisky Exchange blog noted that it "had been announced" the JW Green was being discontinued "in certain markets". Certainly leaves some room for interpretation. Was it announced by JW/Diageo? Does it mean it will still be produced but in smaller quantities and only available in certain countries? Sems a bit unclear. This article from even earlier seems to suggest that the news was coming from directly from Diageo and that it will eventually be discontinued.
I have no idea how reliable either link is of course.