Most of the 90 Palestinian prisoners expected to be released on Sunday are women, as well as several children.
There will be more anxious days in the next six weeks.
About 1,900 Palestinian prisoners and detainees from Gaza are to be freed in the first phase of the deal in exchange for 33 Israeli hostages, including three women, freed by Hamas in Gaza on Sunday afternoon.
One of the most prominent detainees is Zakaria Zubaidi, the former leader of the Al-Aqsa Martyrs Brigades armed group in the northern West Bank city of Jenin.
The 49-year-old man has served time in both Israeli and Palestinian prisons for numerous crimes, including murder.
He said he carried out a shooting in 2002 that killed six Israelis.
Zubaidi was also in the news in 2021 when he broke out of an Israeli prison before being recaptured five days later.
