Although Namco Bandai has yet to officially announce a release date for Dark Souls II, a billboard for the game shows when it will be released in stores.
A photo has been taken by Kotaku which shows that Dark Souls II will be released in March 2014. The billboard was up on the L.A. Convention Center which is the site for E3 2013.
It’s rumored there may be an Xbox One and PS4 release of the game too, but this has yet to be officially confirmed. Hopefully details on that will be shared by Namco Bandai at E3.