Update: PC, too.
Original story: Lara Croft and the Guardian of Light is now playable cooperatively online on the PlayStation 3; Crystal Dynamics alerts via its Twitter account that the feature has now been patched into the downloadable hit game. Only local co-op play was available previously.
The Xbox 360 version got the patch a month ago, along with the first bit of downloadable content; “All the Trappings” it was named. News on the PS3’s DLC is “coming soon,” the developer assures in a separate tweet.
The game’s also out for PC, which isn’t forgotten. An update on its online co-op is “coming very soon.”