From what we saw from the international TV Spot here's what we can imagine / speculate :
Spoiler!!! Click to Read!:
-First , the first Iron Man movie and this one seems to be obviously connected (Adrian Killian's past , Mandarin's terrorist group) .
, she's wearing the suit to save Tony BUT IDK if you noticed but the scene with Tony "radio-piloting" (When he makes fly the pieces of his armor ) and the scene with Pepper suiting up are not the same . So the suit is MAYBE conscious like said before .
-And it looks like the scene when she's "rescuing" Tony will explain the codename of Pepper's suit : "Rescue"