Panamint Cinema
Insider
Both versions were issued on the UK, Region 2 in a "Fox Cinema Reserve" - 2 disc steelbook, which I have.
Also has a documentary "What is the pre-release version".
Still available: http://www.amazon.co.uk/Darling-Clementine-Cinema-Reserve-DVD/dp/B000E6UMH6/ref=sr_1_1?s=dvd&ie=UTF8&qid=1405677281&sr=1-1&keywords=my+darling+clementine+cinema+reserve+edition
Also has a documentary "What is the pre-release version".
Still available: http://www.amazon.co.uk/Darling-Clementine-Cinema-Reserve-DVD/dp/B000E6UMH6/ref=sr_1_1?s=dvd&ie=UTF8&qid=1405677281&sr=1-1&keywords=my+darling+clementine+cinema+reserve+edition