*Update*
““There’s no plans for an ‘Iron Man 4,’” he said. “There’s no script for ‘Iron Man 4,’ but they do have a plan and I think they’re gonna announce it. You know, [Marvel’s] very secretive about it.” After Letterman later brought up the subject again, he added, “just between us, no, but I’m gonna do other stuff with Marvel. I’m still going to be involved with Marvel and there’s gonna be plenty of fun stuff to happen.””
Here’s the vid.
Is he just messing with us? 
Probably. RDJ is a fun guy 😉
Source: SuperHeroHype
