In the latest Poe Dameron comic (issue #14), General Leia attends the funeral of a fellow resistance member. Poe delivers the eulogy and his speech includes a callback to Yoda’s famous dialogue from Empire Strikes Back- “Luminous beings We Are. Not this crude matter.”
Shortly after the funeral, Leia tells Poe that probably sooner than they would like, she will be luminous.
I feel that this is a foreshadowing of General Leia not surviving Episode VIII.