I don't have a release date right off hand, but here are the matches from the Four Horsemen dvd WWE has coming out. They could have done much better on match selection, imo.
Arn Anderson & Tully Blanchard & Ric Flair vs. Pez Whatley & Italian Stallion & Rocky King 6/22/85
Ric Flair vs. Ricky Morton cage match from Charlotte on 7/5/86.
Dusty Rhodes vs. Tully Blanchard First Blood match Starrcade 86.
Four Horseman vs. Dusty Rhodes & Steve Williams & Lex Luger & Nikita Koloff & Paul Ellering 7/16/88 in a War Games match
Arn Anderson & Tully Blanchard vs. Sting & Nikita Koloff 7/16/88
Arn Anderson & Tully Blanchard vs. Barry Windham & Lex Luger 3/27/88 Clash of Champions
Arn Anderson vs. Ric Flair 9/17/95 Fall Brawl