"An unexpected technical issue means that Beneath the Ashes will not be available to download on 10th February as planned," Eidos told Strategy Informer. nope
The $10 expansion takes place after the conclusion of Crystal Dynamics' action-adventure game, packing a new levels and new enemies. The second promised Xbox 360-exclusive add-on, "Lara's Shadow," is apparently still slated for March 10.
"We apologize for this delay and we are doing everything we can to bring you this exciting new content for Tomb Raider: Underworld as soon as possible," added Eidos.