A few things to consider here. There were NPCs in MKX. It could mean nothing.
Shawn Kittelson is the writer of MK11. He also wrote MKX comic series in which Sheeva, Sektor and Cyrax featured. They could just be rehashing the story in game.
Boon has said after the backlash from MKX he wouldn't have NPCs in the game again, but he's also said he wouldn't have repeat DLC chars. So if that is Triborg he could effectively be ruled out? But if it's Sektor and Cyrax as separate chars TECHNICALLY they wouldn't be repeat DLC.
But Cyrax DEFINITELY has Triborg's VA. That could theoretically just be Cyrax's voice full time now, though.
So many questions. Which won't be answered 'til they announce who DLC is.
Also, to the people that have no self control and already know what happens, stop being edgelords and trying to spoil the story for other people. That shit is old as fuck.