During a earnings call, Disney chief Bob Iger announced that Joss Whedon will be back for "Avengers 2".
Source: Joss Whedon will return for 'Avengers' sequel
'nuff said right?
Whedon will be both writing and directing the sequel to this Summer's blockbuster Marvel's Avengers (aka. Avengers Assemble outside the USA). He's also slated to develop a live action Marvel-themed show for ABC.