As far as I can tell, here are the changes:
-Smaller shield/emblem with new S design (similar to the stone S symbol from promos) with the red layer raised above the blue frame
-Gauntlets are now inter-woven with the base suit, not resting on top of it, and are strap like rather than solid
-Side ribbing is broken up into separate lines instead of being cast as one piece with the outer line turning at a sharp angle down towards the "belt"
-Square "buckle" with S
-Waist gold bands are slightly wider and have a sharp/angled edge, rather than coming to a point
-Top of boots are different (not a solid band, but rather two outer lines overlaying boot)
-Neck is slightly curved in between cape attachments rather than being straight across