Superman 2 Delayed?

Updated July 7th: IESB debunks the rumor.

According to RottenTomatoes, Bryan Singer's next project after Valkyrie is not the Superman sequel.

"Bryan Singer had previously told us that the "Superman Returns" sequel "Superman: The Man of Steel" would be his next film after "Valkyrie." His producers tell another story. Neil Meron and Craig Zadan have Singer lined up to direct "The Mayor of Castro Street," a story of gay rights activist Harvey Milk, within a year.

Note that this does not come from Singer himself, but rather the biopic's producers. Stay tuned.