It seems the new MMO based in the DC Universe has now entered the long list of late 2010 games being pushed back to 2011.

Sony Online Entertainment President John Smedley:

As the game heads into external beta testing, this extra time will allow us to address community feedback in a meaningful way. When we get deeper into external beta, we’ll be able to share more information regarding the new launch date.

Sounds to me like the game is having techincal difficulties they still need to fix. The good news is that the beta will be available by November 30th to everyone who preorders by November 15th.