Here are a few new set images featuring Henry Cavill suited as 'Superman, courtesy of Gregory Zonsius. Possibly showing that there aren't any "trunks" on the suit, in the pics below, you can see that the waist area is blue with the gold belt coming across the waist.
Zoomed in closer at the suit.
In the pic below, there is a possible sighting of the "curl" in the center of Henry Cavill's hair. I've zoomed in close to try and give a better view.
What do you think?