According to The Wrap Paul Rudd will play Hank Pym in the July 31, 2015 release of Ant-Man.The film is supposed to launch “Phase Three” of the Marvel Cinematic Universe following Avengers: Age of Ultron’s. [May 1, 2015 release]
Although there is still no assurance yet this is 100% accurate, but Wright’s original plans for the film called for both Pym and the later Ant-Man of the comics, Scott Lang, to appear in the feature.
“The idea that we have for the adaptation is to actually involve both… Henry Pym and Scott Lang,” Wright told SuperHeroHype some years ago. “So you actually do a prologue where you see Pym as Ant-Man in action in the 60’s, in sort of ‘Tales to Astonish’ mode basically, and then the contemporary, sort of flash-forward, is Scott Lang’s story, and how he comes to acquire the suit, how he crosses paths with Henry Pym, and then, in an interesting sort of Machiavellian way, teams up with him.”