What does Hamas plan to release as part of the ceasefire negotiations and who is the Bibas family?

Hamas announced the release of six living hostages on Saturday (twice the originally planned number) and four deceased hostages next week, including members of the Bibas family. The Bibas family—Shiri, Yaden, and their sons Ariel (4) and Kfir (9 months)—were seized during the October 7 Hamas attacks. The two young boys became powerful symbols of the attacks' brutality across Israel. The announcement of these releases suggests the ceasefire deal is back on track, though confirming the Bibas family among the deceased would represent an extremely painful moment for Israel.