So for sake of organizing costume info;
-Boots: They look to be different from those used in GI JOE ROC. If I'm not mistaken weren't the ones used in ROC, Oakley SI assaults? The new ones look (at least from the screen caps) like a hiking boot.
-Shirt: Form fitting w/ leather piping for rivets and some sort of "scale" under the arms.
-Pants: Look to be the same black BDU type used in ROC, but with stirrups added (don't know if this is just for the zip-line scene or not).
-Sword: Looks to be the same design as the ROC, minus the serrating but w/ a wood grip and blackened blade. Plus the clan symbol is moved down from the blade to the Habaki. The Saya looks to be different as well (matching the sword furniture changes?).
-Mask: Some type of urethane? Maybe using a fabric face, maybe not? The visor is totally different (i.e. BETTER)
-Armor: Something new, possibly a mix of the other JOEs armor pieces from the tac vests along with some original upper arm/forearm and back pieces, riveted to the shirt.
-Gear: Where to begin...