How does Nietzsche envision morality evolving in the future and his rejection of morality?

Focus on how Nietzsche rejects both models of morality and begins, over several of his books, to lay the foundations for a new morality of humanity- a morality beyond morals.
Use these books for references: Beyond Good and Evil, Twilight of the Idols, and Thus Spake Zarathustra ( all by Nietzsche), along with peer-reviewed scholarly articles