A few articles with the details:
kotaku.com/5924378/phantasy-star-online ... rd-in-2013
ign.com/articles/2012/07/09/sega-teases ... rn-release
pso-world.com/news/02455-sega-officiall ... -pso2-2013
Also, the site is already up:
http://www.pso2.com/us/