Update (3:20 p.m. EST): Tantawi's speech has sparked violent clashes between protesters in Tahrir Square and the Supreme Council of the Armed Forces. Reuters has a helpful live blog that is assembling the tweets of people on the ground and streaming live from Cairo. Folks an Twitter are reporting that the SCAF is using tear gas bombings to dispel the protesters. Meanwhile, protesters continue to chant, expressing distrust for Tantawi and rejecting his proposed referendum on the Army's continued role in the government.
Update (12:58 p.m. EST): Field Marshal Mohammed Hussein Tantawi, the chairman of the ruling Supreme Council of the Armed Forces, appeared on state television to speak on the crisis talks. Al Jazeera reports that he confirmed Monday's elections would go on as planned, and "said the military would give up power and return to its barracks if the people approved such a move in a national referendum." He also "defended the military's conduct and said the army would never kill an Egyptian citizen." NPR's Andy Carvin, meanwhile, tweets: "AJE: The crisis in Egypt might've just deepened with that speech by Tantawi."
Update (12:06 p.m. EST): In its report on the agreement stemming from the crisis meeting, Al Jazeera brings news that the military has pledged to withdraw from Tahrir Square: "As part of the agreement, the military will withdraw forces from Tahrir Square, confine them to protecting public building, compensate the families of the victims, and bring to trial their killers."