Although the major Nazi criminals are all dead, I have a belief that evidence of what happened to many of them is yet to be discovered.
Just like this case photographs previously undiscovered, I think similar photographs and documents exist all over Germany and especially Argentina and other South American countries where these Criminals fled....
I think if we really knew what happened after the end of WW II it would literally rewrite history...
For example, would it be noteworthy if it came out that Martin Bormann made it to South America...etc...
It is an interesting academic discussion, but by the end of the war there was no more stomach for chasing marginal war criminals.