Sorry for the bad news Ronan:

Bioshock 2 �Rapture Metro Pack� delayed - The Lost Gamer

It has been announced today that the Rapture Metro Pack for Bioshock 2, previously due to be released this week, has been delayed. As to when it will hit Xbox Live, Games for Windows or PlayStation Network is unknown at this time.

The contents of the DLC, which is confirmed to cost 800 Microsoft Points, are:
Six all-new maps built, some built from the single-player portion of the game
Three new Achievements/Trophies
Rebirth Feature � Players who reach rank 50 have the option to rank down to Level 1 and receive a special mask

We�ll be sure to keep you posted when a release date is confirmed.