I really don't know because the villain of story was killed. But, one thing that i learned is: i trust in Sarah J Maas because she is amaaaaaaazing. Therefore, i am very very very excited. I am ready for u, March.
It was never said that Rhys and Feyre weren't to be major characters, just that they wouldn't be the main ones, so it would be narrated by someone else. At least that's what I'm hoping, like maybe it'll be cassian?