Muslim Brotherhood supporters are gathering in large numbers in Cairo ahead of Friday prayers and protests.
Rival demonstrations supporting the overthrow of Mohamed Morsi are also planned.
Everyone is wondering whether this will be another day that ends in violence.
The Muslim Brotherhood tells ITV News they are against violence but will "pay the price of their blood" to restore their ousted president.
Egypt's army has named two further officials in the transitional government as its supporters and opponents vowed to stay on the streets.
There has been outrage in Egypt after 51 people were killed near an barracks where ousted President Mohamed Morsi is thought to be held.