Asked by a fan on Twitter what sort of credit he will get for his work on Marvel's The Avengers (as expected, it's a story credit due to the fact that director Joss Whedon chose to rewrite the entire screenplay from scratch) Zak Penn has dropped a very intriguing hint about an upcoming project he may soon start work on.
Penn is best known to comic book fans for writing Elektra, X-Men: The Last Stand and The Incredible Hulk. Other writing credits include Inspector Gadget and Behind Enemy Lines. In case you can't quite work it out, Penn was asked whether he would work on another superhero movie and replied that he, "might do something very strange." This seems like a fairly strong indication that Marvel Studios are moving ahead with Doctor Strange and that he will work on the script recently completed by Thomas Dean Donnelly and Joshua Oppenheimer. Whether or not this is an indication that it is the mysterious 2014 movie from the studio remains to be seen