With Sony’s Spider-Man 4 apparently no longer coming in May 2011, other studios are now taking the chance to claim new release dates for their own movies in that timeframe. Disney’s Pirates of the Caribbean: On Stranger Tides is now set to be released on May 20th, which would allow for it to come out a week before the Memorial Day holiday weekend. A lot of things are still unknown about the fourth Pirates movie–including whether or not Johnny Depp will return as Captain Jack Sparrow–but ComingSoon.net has a rumored plot for the film, which involves the Fountain of Youth and Jack meeting none other than Blackbeard himself.