How sure are you he's ''major'' ?
He's more major than the thugs you slaughter in droves. TW3 never spoiled the death of a character like that ahead of time, to my knowledge. At least not this far before release.
Am I wrong?
CDPR themselves have set this character up as a (reasonably) likeable companion, who accompanies you throughout the early parts of the story.
There are any number of ways he could have stopped accompanying you -- perhaps he betrays you, perhaps he leaves to pursue his own tasks, perhaps he gets killed in some other way.
Point is, I wanted to find that out for myself. I liked Jackie, as I'm sure plenty of other fans did, too. I don't mind him dying, I'm just frustrated I didn't get to experience it firsthand, with all the emotional weight and context that goes with it. I do not believe this is a bait and switch, especially because CDPR have said in interviews (at this year's E3) that that cinematic is a real part of the game that you will play.
But anyway, you're a mod now -- you know this is off-topic, so let's take it elsewhere or drop it altogether.
EDIT: Also, as an addendum, I'm not actually that bothered by this. I'm not angry, not going to boycott or have a less fun time with the game. It's more of a "Come on, man, why'd you do that?" kind of thing.