Flashforward (prolepsis)
Narrative anticipation: the story reveals or glimpses a future event before reaching it.
Prolepsis projects the narrative ahead of its chronology: it announces or shows an event that hasn't yet occurred in the story's present. From the simple notice ("he would never see him again") to a full scene moved to the opening, it trades the suspense of *what* for the tension of *how*.
It's the engine of coffin-openings and prophetic first sentences — like that of One Hundred Years of Solitude, which strides across decades in a single line. Prolepsis commits: what is announced must come to pass, and how the story honors its promise becomes the real subject.
Example
Announcing on page one the death that won't arrive until the final chapter.