Olive Films have announced via FB that The Sands of Iwo Jima will be released on Nov 11 2014. Its up on Amazon now for pre order.
I know these releases can be of good quality but lacking real extras. Given the importance of the movie maybe there will be an extra this time.
I know there was a making of ... documentary by Leonard Maltin included on the 45 th Anniversary Republic release vhs NTSC version (that I still have).
Olive included Maltin's Docs on Rio Grande and the Quiet Man when they released those movies. so who Knows??
I am sure more info will appear as we get nearer to date.