We've been hoping for a live-action Aquaman movie since quite a while. Back in 2009 we heard that Appian Way, Leonardo DiCaprio's production company would produce the movie Aquaman for Warner Bros. But not much happened since then. Fortunately Warner chairman and CEO Barry Meyer confirmed again in May 2010 that a live action Aquaman movie is still in development.
No announcement yet of what version of Aquaman the potential movie would be based on. And it's not because Leonardo DiCaprio’s Appian Way is producing the film that he will be starring in it. Well you get it, we only know that there's gonna be an Aquaman movie in a not too distant future. IMDb is listing the film for a 2013 release, but that's just fortune telling as of now...
Anyway, we can still speculate about the potential actor who could play as Aquaman! Leonardo DiCaprio wouldn't be a bad choice, but he's maybe a bit too old... Ryan Reynolds is already Deadpool and the Green Lantern so he's unlikely to get the role as Aquaman. Maybe Actor Justin Hartley (Green Arrow from Smallville), after all he did play as Aquaman in this pilot episode of a canceled Aquaman TV series:
Well, do you have any other actor to suggest? Who could be Aquaman?