Mubarak, who ruled Egypt for three decades, is accused alongside seven of his former police commanders of involvement in the killing of hundreds of protesters during the uprising that toppled him.
An appeals court overturned his initial life sentence on a technicality.
The same court will also deliver its verdict on corruption charges levelled against Mubarak and his sons Alaa and Gamal.
Sitting at a police academy outside Cairo, the court will pronounce their fates in a different climate from the heady days that followed Mubarak's overthrow, which at the time seemed like a swingeing defeat of autocracy.
Youth leaders who spearheaded the anti-Mubarak revolt have been jailed for staging unauthorised protests after the June 2013 ouster of the divisive Morsi by army chief Abdel Fattah al-Sisi.
Sisi, who won May's presidential election, has emphasised law and order at the expense of freedom to protest, a popular stance among Egyptians fed up with the chaos and economic ruin of their experiment with democracy.