Rockstar has just announced the second pack of content for Grand Theft Auto IV, titled "The Ballad of Gay Tony". This episode will focus on not Gay Tony, but rather Luis Lopez who was heavily speculated to be the protagonist due to the "Impossible Trinity" achievement. Here is an excerpt from the announcement.

The Ballad of Gay Tony injects Liberty City with an overdose of guns, glitz, and grime. As Luis Lopez, part-time hoodlum and full-time assistant to legendary nightclub impresario Tony Prince (aka "Gay Tony"), players will struggle with the competing loyalties of family and friends, and with the uncertainty about who is real and who is fake in a world in which everyone has a price.

GTAIV: The Ballad of Gay Tony will set you back a mere $20 or 1600 MS Points. Don't have Xbox Live? No worries! Rockstar has also announced a retail version of both episode packs called Grand Theft Auto: The Episodes from Liberty City which will include GTAIV, The Lost and Damned and The Ballad of Gay Tony all in one package for $39.99 and does not require GTAIV to play.

The Ballad of Gay Tony and The Episodes from Liberty City are on track for a release sometime this fall.

Source: Take-Two