Sony Online Entertainment and Warner Bros. have announced that Warner Bros. has licensed Sony to develop a massively multi-player online roleplaying game based on DC comics, and that Sony has acquired Warner's Matrix MMORPG.  A Q4 2007 release is planned for the DC MMORPG.  

 

Sony is the producer of Everquest and Star Wars Galaxies:  An Empire Divided, among other MMORPGs.