If that's the case and the whole thing's a part of the story then I don't think they would've shown his death and spoiled it.
They have been hinting at it almost suspiciously much. If you look at recent Night city wire 4 broadcast, there is a moment where the narrator says: "Where can you find most of the legends of Night city? The Graveyard!" - and camera cuts to Jackie being knocked to the floor. There is also a scene where Misty gives V a necklace with a bullet in middle of it; one can assume its the bullet that killed Jackie as Misty is Jackies GF.
(Lets not forget the concept art with a graffiti epitaph of Jackie (something that seems to be a valentinos thing) )