Recently, ITV released a new 'Where Drama Lives' trailer for their autumn 2013 dramas. You can watch it here (if you're not in the UK, this might help you). Below are some screencaps of the three glimpses we get from the new Poirot episodes:
UPDATE: Guess who made a brief appearance in a second ITV trailer today (9/9/13)! See ITV's press release for the trailer and the reason behind it:
All photos copyright ITV.