Ever since Shane Black (Kiss Kiss, Bang Bang) signed on to direct Iron Man 3 last February, there's been some confusion on whether or not he would write the script.  It seemed like a no-brainer that Black, who broke into Hollywood with his screenplays for films such as Lethal Weapon and The Last Boy Scout, would also get to handle the script for IM3.  But then we learned that Marvel had hired Drew Pearce (the British TV series No Heroics, the upcoming Marvel movie Runaways) to handle the screenplay, but would also "work closely with Black".  Now CinemaBlend is reporting that Black is co-writing the script with Pearce.  CinemaBlend also reports that Pearce was brought in to keep the script family-friendly since Black is known for his R-rated work.  I find that slightly difficult to believe since I'm pretty sure Black is talented enough to write a PG-13 script.The real question in all of this isn't about how the credits will shake out, but Black's level of involvement.  If he's heavily involved with the screenplay, that's terrific, but I seriously doubt he would be shut out of the process.  Iron Man 3, starring Robert Downey Jr., is set to open May 3, 2013.