Heh... 1337. Yeah, it's for real. Running With Scissors have released a patch for Postal 2 with a number of enhancements. You can pick up the 27.44 MB patch here. Here's the short version of what's in the patch:
The patch contains important bug fixes and gameplay enhancements including new maps, tracer fire, the Weapon of Mass Destruction, new cheats like the ricocheting cat gun, and the scissors launching machinegun and faster level loading times.