I got delivery yesterday from Amazon
It's nice digibook
Disc 1 is just the Film no extras
All extras are on Blu-ray Disc 2
The making off Featurettes is good 1 hour 49 min
It's sold out with Amazon/HMV
It's still listed as available with Zavvi at the moment but I expect that will change soon
The same digibook though available from various retailers in Europe
Germany release has german text inside
Italy and Czech Republic releases the text is in english
Jcard will be in language of country release
I might get the full version of the Making of Dunkirk Hardcover Book in the new year