The three Variations are Sektor, Cyrax and Smoke. They each have their own special moves and some variation specific combos, but they do not share any special moves at all.
Sektor's new move is the Air Dash, kinda like Kitana's Square Wave Butt.
Cyrax now has bombs that float up and stays mid-air.
Smoke has a mix of his UMK3 Cyber Ninja moves and his MK9 Human Smoke moves. He does NOT have the Tele-Uppercut, only Sektor has that.
I overall like Triborg. Still hate the name, but I do like his looks and how his colours change to fit each Cyber Ninja. And though I prefer Human Smoke, I do like his representation with Triborg. Triborg's Smoke Variation looks very dark purple, but it might be the lighting of The Pit stage.
Which also looks awesome! The Pit stage is beautiful! And you can see Blaze and the monk fight in the background, like in MK2. Really cool. ^^