The new versions of Penny Arcade's On the Rain-Slick Precipice of Darkness 3 are now up!
The free DLC for the game is now available on Steam and will be available for the XBLIG version sometime this day (if it hasn't updated already). You may need to log out of Steam and log back in before the download will begin.
The Mac version of the game is not on Steam yet but we're working with Valve to get it up ASAP. Not sure if it will come out today (they're really busy over there at the moment what with all the new games coming out this time of year). I'll let you know when it goes up.