This is the Previews Exclusive edition with a Variant Cover by Frank Cho.

The book itself has the black and white ink version of Cho's cover art, sans text, on the front cover. The dustjacket features the same art in full color.

Not a complete history but a nice coffee table collection of modern era variant cover art. Reproduces over 300 variant covers without the logos or text. Art by Neal Adams, Mike Allred, Brian Bolland, Darwyn Cooke, Adam Hughes, Jock, Dave Johnson, Jim Lee, Frank Miller, Dan Panosian, Alex Ross, Claire Wendling, and many others.

From the publisher:

For the first time ever, explore the complete visual history of DC Comics variant comic book covers in this amazing collection.

DC Comics cover art is some of the most celebrated in the world, from the first appearance of Superman in Action Comics #1 to the iconic covers that adorn classics such as Batman: The Killing Joke and Watchmen.

Fans of comic book cover art have also come to relish a phenomenon that began in 1986 with the first issue of The Man of Steel, which featured two different covers from artist John Byrne. The notion of so-called "variant covers" caught on and has now become a regular part of DC Comics' diverse output, with a wildly creative set of alternate covers being created for many key issues. Now you can explore the world of these alternative works of art with DC Comics Variant Covers: The Complete Visual History, which showcases some of the finest and most famous variant covers ever produced, with insight into the design process from leading comic artists and industry experts. Featuring an astounding collection of covers featuring DC Comics' remarkable characters, including Batman, Superman, Wonder Woman, Green Lantern, Aquaman, Cyborg, The Flash, and more, DC Comics Variant Covers: The Complete Visual History is the perfect gift for casual fans and comic book aficionados alike.