What does 2 Samuel 13:32 mean?

But Jonadab, son of David’s brother Shimeah, spoke up: 'Don’t think all the king’s sons are dead. Only Amnon is dead. Absalom has been planning this ever since Amnon raped his sister Tamar.' 2 Samuel 13:32 - Modern Text Bible

(Jonadab clarifies the truth—only Amnon is dead, and this was Absalom’s revenge for Tamar.)