Superman Sequel Delayed?

Updated March 21: Hollywood Reporter states that Bryan Singer's WWII thriller will NOT effect SR2:

Contrary to earlier reports, the filmmakers are saying the untitled project should not interfere with Singer's mounting of a sequel to "Superman Returns" for Warner Bros. Pictures early next year.

Updated March 16: DVD-ographer Rob Burnett shares his thoughts in the Requiem for Krypton thread at The Planet (here and here).

March 14: SupermanHomepage debunks Variety's speculation that Bryan Singer's new film with the revamped United Artists company will delay the sequel to Superman Returns.