His skin does look pretty smooth in that video. Maybe he over does it with the moisturizers? He doesnt look like that in the game though, does he? Later... I just saw a gameplay vid. He looks real pale, and somewhat smooth...but it leaves an "hes old" impression for some reason. I think its fine the way it is...it just doesnt look much like skin though.

well i think if every mortal kombat character aged wed be fightin old men with walkin sticks so if they look the same age or younger my props go out to boon

I'm not saying that him looking younger is a bad thing, I was just wondering if he's reverting or something?
Here's a shot:

Perhaps his true destiny is to find the fountain of youth, which he did!

Come to think of it, I didn't get a very good look at his alternate outfit, but do you see the Dragon Medallion anywhere?

Well if you really think about it, Scorpion is the only character unchanged from MK:DA. Everyone else looks different. Li Mei has the most dramatic change besides Sub-Zero.........and Raiden obviously. I also noticed that they gave Bo'Raicho some wrinkles this time around.

scorpion looks really different. new boots, new costume, new mask, "metal eyebrows",... it's way cooler than the MKDA costume (except for the boots, i liked his old boots better).

Maybe Sub-Zero died and now whe have 2 ninja-ectres?

simeple way to resolve this, Sub-Zero's body is getting more like an ice-man every game so no wonder it looks as if his skin is smooth, but he does look older apart from his skin smoothness so the effects of the Dragon Medallion aren't wearing off.

Maybe, Onaga stole his Dragon Medallion at the End of MKDA & Sub-Zero's becoming young again.
Either that, or he's gradually becoming Subby the Snowman. All he needs is a top hat & a carrot.