We see the model looks to be an older man wearing the original Ant-Man costume, which most likely means Michael Douglas.
Previously, Edgar Wright stated there would be a prologue where Hank Pym would been seen as Ant-Man in the 1960s.
The costume the model is wearing resembles the Marvel Comics 1960s Ant-Man original costume.
We could take it a step further and state that as the model looks older, Michael Douglas will be seen in the classic Ant-Man costume in the present before passing it on to Paul Rudd as Scott Lang.
We also see the image contains two models: one small and one...giant?
Ant-Man has a July 17, 2015 release date.
Head on over to the Cosmic Book News Avengers Hub for more.