I had almost given up hope, but today it was finally revealed: Agatha Christie's Poirot WILL be brought to its conclusion! ITV has just commissioned the final five stories: Labours of Hercules, Dead Man's Folly, The Big Four, Elephants Can Remember and Curtain. The episodes will go into production during 2012. See this press release for more details: http://www.itv.com/presscentre/pressreleases/programmepressreleases/poirotrecommissioned/default.html.
Words cannot describe the sense of pure joy and relief I felt when I discovered these fantastistic news. I am so happy I just can't stop smiling. I must, however, say I'm slightly annoyed, from a completist view, that the final short story, The Lemesurier Inheritance, will not be made. But, to be honest, it is a minor loss. The important thing is that a television phenomenon will have a proper sortie. And I look forward to placing these episodes in a complete chronology of the episodes. Have a look at the previous post if you are interested in how these episodes would (hopefully) fit into the chronology.
I don't think there's much else left to say, other than congratulations to all fans on this truly wonderful day!
EDIT APRIL 2012: David Suchet has confirmed on Twitter and in a recent interview with BBC Radio 4 that he will start filming the final stories in mid-October, and the first story to film is apparently Curtain.