Depending on how you look at this, this is either a major or minor change to the movie! It could just be that Marvel decided to change the wording in the synopsis because "master thief" sells a little easier than "con man". However, it seems more likely that this is a change made in the new script which was written by Adam McKay and Paul Rudd. A master thief can of course still be a con man, so I wouldn't get all that worried that too many alterations have been made to the Scott Lang character! That "TBD" screenplay credit is very telling however as there will likely be a lot of complications with the Screen Actors Guild over who should get credit for Ant-Man. Regardless, being a master thief could be considered an upgrade! Share your thoughts on these changes below!