The last three of episodes of "Agatha Christie's Poirot" have been released on Acorn TV since this summer, and they will be out on DVD very soon. However, there hasn't been much news about them being released on PBS until now. In Milwaukee, at least (check your local listings– times will vary depending on your local PBS station in the United States), the last three episodes of Poirot will air this November.
Saturday, November 15th: Elephants Can Remember
Saturday, November 22nd: The Labours of Hercules
Saturday, November 29th: Curtain