Eugh (my first reaction). This is now, officially, the official (repeated to make sure) title for the fourth installment of the Indiana Jones franchise. Here is the statement from IndianaJones.com:

HOLLYWOOD, Calif. (Sept. 9, 2007) - The title of the new Indiana Jones adventure, now in production under the direction of Steven Spielberg, is Indiana Jones and the Kingdom of the Crystal Skull, it was revealed today by actor Shia LaBeouf. LaBeouf, who stars in Indiana Jones and the Kingdom of the Crystal Skull with Harrison ford, Cate Blanchett, Karen Allen, Ray Winstone and John Hurt, announced the title during today’s MTV Video Music Awards, which were broadcast live from Las Vegas.

Indiana Jones and the Kingdom of the Crystal Skull is a Lucasfilm Ltd. production, and is being distributed by Paramount Pictures. It will be released in the U.S. and simultaneously in most territories worldwide on Thursday, May 22, 2008. Frank Marshall returns as producer, with Kathleen Kennedy joining George Lucas as executive producer.

And here is a logo via AICN: