No; only one party wants a One-State Solution, as in an Islamic State.
This has never been changed.
The problem is that no one was ever called Palestinians except the Jewish settlers until 1967, when magically all Arabs living in the area, who had always insisted they were Arabs began calling themselves Palestinians. This didn't happen until they got their lunch handed to them in the 1967 war.
The Palestinians are a made up people according to their own leadership.