"The maintenance is scheduled to take place on Oct. 14, 2013 from 8:00 p.m. (PDT) / Oct. 15, 2013 from 3:00 (GMT)."

Also, it seems like the zone caps might be added sooner. "* The population cap is planned to be introduced separately. (Added on October 11th, 2013)"

Source: http://forum.square-enix.com/ffxiv/t...56#post1410856