After attempting to attract unwashed Eloi moviegoers (i.e., those who wouldn’t know Joe Swanberg or Noah Baumbach from a giraffe) with an assurance that the cast of Arthur (Warner Bros., 4.8) is safe and familiar, WB marketers have stuck

their necks way out by admitting that Greta Gerwig has the lead female role. Or, in short, that she’s Liza Minnelli.

(l.) the Arthur teaser poster with Jennifer Garner, Russell Brand and Helen Mirren that was unveiled on or about 2.16.11; (r.) Gerwig added to the current version.

The original teaser poster, however, remains on the film’s website.