Oh, I really really hope not. I hope with all the hoping power I can muster that it's just a scrapped idea and nothing ever - EVER - comes of it.
I have a feeling your probably right. One thing the person with Sith eyes basically tosses most of what i mentioned out.
Most likely it was a demo shot of how the PC could travel to works and with a party member which they placed HK in since they did not have the companion character's models done. I have a feeling they did not show this rough piece since it might make plays think they can have HK 47 as a party member or people would think he was Revan.