NEW: Dunkirk will be #1 on the UK's Official Video Chart this Christmas. It's sold an incredible 333,000 units in just 3 days, outselling the top 10 combined & surpassing the first week sales of Batman Begins, Inception & Interstellar (via the Official Charts Company).
FYI - for US people (Moviesanywhere is for US)... I just redeemed my Blu-ray/DVD/Digital Dunkirk's digital copy at https://moviesanywhere.com/ and now my HD digital copy should be available to me at Moviesanywhere, Amazon, Google, iTunes and Vudu. At Moviesanywhere and Vudu I now also have the special feature videos. Amazon and Google Play seem to just have the movie. I didn't check iTunes.
That gives me a lot of options for streaming and online viewing.