What piece of distressing news does Pip hear at the end of the chapter15?

At the end of Chapter 15 in "Great Expectations," Pip learns that his benefactor is not Miss Havisham, as he had assumed, but someone else entirely. This revelation leaves him feeling unsettled and anxious about his future, as he grApples with the uncertainty of who is actually supporting him. The news adds to his growing sense of confusion and disillusionment regarding his expectations and the nature of his ambitions.