As they did with the release of “Action Comics #1000”, DC Comics has created a number of variant covers for “Superman #1” which are exclusive to certain comic book stores around the world.
Forbidden Planet has a variant cover (in a variety of versions) drawn by Joshua Middleton.
Forbidden Planet also has a variant cover drawn by David Mack.
Golden Apple has a variant cover of Rogol Zaar by Francesco Mattina.
Golden Apple also has an 16 Bit “Action Comics #1” tribute variant cover by Matthew Waite.
Dynamic Forces has a variant cover signed and remarked by Ken Haeser.