What is the recent breakthrough in Gaza ceasefire negotiations between Hamas and Israel?

Hamas has announced it will release the bodies of four Israeli captives, including Shiri Bibas and her children Ariel and Kfir, who were reportedly killed in an Israeli airstrike in November 2023. The father, Yarden, was freed earlier this month. In exchange, Israel will release half of the Palestinian women and children detained during the war. This reciprocal agreement represents a breakthrough in the ceasefire talks, though it comes ahead of the previously agreed timeline. The exact number of Palestinians who were forcibly disappeared or remain alive in detention remains unclear.