The last visual novel I read is a short one called "The language of love", which is about a romance between a person studying in order to get into university and a mother that is single and with a child due to circumstances that are explained in the novel. It was an entertaining read, and it's quite cheap too, at 10€ in Steam if you live in Europe.
But for long VNs, it's been a long time since I've seen anything announced that is worth reading honestly. I think there was something from Key but I don't recall if it was successful or not.