(Sorry for disappearing - Marta's giving me a hard time trying to fall asleep...)
According to LJ user l_u_f_t , people from the regions are beginning to arrive and five tents have been set up at Oktyabrskaya Sq. already. LJ user samuel-smith writes that "there's a ring around the tents. People surround them so that the police couldn't take them away. From time to time, plainclothes officers approach the people and tell them something. [...] Cups with hot coffee are being distributed." He's also posted a picture of the tents. LJ user lipski wrote half an hour ago that there were now Georgian flags at the square, in addition to Ukrainian, and that people were coming and going, and there are approximately 5,000-6,000 there now.