When does Smallville return?

Smallville is an American superhero television series based on the DC Comics character Superman. The series was produced by Millar/Gough Ink, Tollin/Robbins Productions, DC Comics, and Warner Bros. Television. The pilot episode set a ratings record for the WB debut, with 8.4 million viewers. By the end of its run, Smallville passed Stargate SG-1 as longest-running North American science fiction series by episode count.