Creator Julian Fellowes has hinted that the series will not be continuing into the 30's, which leads to the belief that Downton Abbey will end after Series 7 or 8. Further, executive producer Gareth Neame has said “[w]e are making Year Five now. The question as to where it ends is something we will think very carefully about. It won’t be ten years. We will bring it to an end at some point.”
Well, at least we've got a few more seasons left, as we're just heading into season five - thank goodness! Read more about Downton Abbey's ending. You can also find out who would love to come back to the show.