According to a Sony link I'll post below CCP are saying a Summer 2012 release date, which could mean approx June-July 2012, about a year away.
The closed Beta should be available in approx December.
Sony Playstation DUST514 Release Info
The Comments Section
DUST514.com Press Release
Sony E3 DUST514 Presentation Video
The CCP Eve Online DUST514 Dev Blog
and last but not least, the first DUST514 Chronicle!