What is Hamas's announcement regarding captives and what is the purpose of this gesture?

Hamas announced the return of four bodies and the release of six living captives as part of a ceasefire agreement. This move is described as a gesture within a renegotiated deal with Israel regarding the terms of their agreement. Israel has adjusted the conditions under which it would fulfill its obligations in the arrangement. The release, scheduled for Thursday, is intended to facilitate the entry of humanitarian aid into Gaza, specifically caravans, tents, and heavy equipment. This aid is critically needed in Gaza amid the ongoing conflict, with the exchange representing a calculated step in the complex negotiation process between the parties while addressing urgent humanitarian concerns.