I was under the impression that the actress Bitsie asked to leave Grimm and they killed off her character because they didn’t know what else to do, because that is how NBC thinks. Was I told wrong?
As far as I have seen, there has been no official announcement on whether Juliette is staying dead in season 5. The writers and Bitsie herself have been doing a lot of teasing and trolling, but have also outright said they aren’t telling us for sure until the season 5 premiere. They want us guessing.
There was one TVLine interview that’s been quoted out of context a lot to make it sound like she’s gone for good, but if you actually read the whole interview, the creators are laughing, joking, and being evasive. When asked if they’re serious, Kouf replies cryptically that he’s as serious as he usually is.
Google “Grimm Juliette dies dead” (overkill much?) and read for yourself. Sorry for the lack of a direct link…mobile.
TL;DR: Believe nothing the writers tell you on hiatus because they troll.