Stephen love’s to do his live Facebook fan videos, And one fan asked him about Black Canary and if she was coming back at all, And this is what he said on the matter.
When asked if Black Canary would be returning to the show, Amell demurred, saying, “The idea of Black Canary and what it means and what it embodies in Star City is something we’re gonna explore this year.”
So take that as it is, we may not have seen the last of the Black Canary in Arrow but I think we have seen the last of Laurel as her.