Conversation so far:
What media platforms is the film on?
there are a multitude of poor quality DVDs with different edits, scores, running speeds and usually in definitely unoriginal black and white".
Which is the official version recorded on?
35mm print that was the source of Shepard's 16 mm print.
Where is the original now?
Museum of Modern Art's.
How has the film been restored since?
this time in a 2-DVD set with added extras on the second disc.
Is the film critically acclaimed?
CANNOTANSWER.
What other restorations were there aside from the DVDs?
The restoration was released on a 2-Blu-ray set by the BFI, alongside a host of extras, including many other newly restored Civil War-related films from the period.

Question: Any others?
Self-contained rewrite: Besides a Blue-Ray restoration of The Birth of a Nation, any others?