A new patch adding 'Dead Money trophies has been released for the PS3.

Additionally, a larger update is also coming. Matt Grandstaff posted the following a couple of days ago in the Bethesda forum:

Wanted to let you know there's a new game update coming soon -- these will optimize the game for DLC and cover some issues reported in our forums – including performance and stability. We’ll let you know when the update is released.
Twitter logo Facebook button YouTube button