To lighten icekid’s load, I’ll continue to try and answer as much as possible. He (and my friend) saw a rough cut with early special effects, especially in the new, freshly-shot third act, which is where it will appear. Icekid told me, at that stage, it looked similar to the lifeforce from Final Fantasy, only fire-colored with purple elements. Obviously that’s changed since to be much more pink. It only vaguely formed a phoenix shape and it’s big moment is when Jean sacrifices herself to kill Chastain. She’s increasingly fiery throughout her big finale, though. There was no screech in that cut, but I’d imagine that’s something they could add in post, only it doesn’t really fit considering the godly Force doesn’t really identify as a phoenix. So, it’s likely it won’t be there at all.