While it was announced previously by the Running With Scissors Game company that Postal III would be released for Linux like had been done with previous Postal games, there has been some speculation in recent months that Postal III would not make it out for Linux. In particular, because this game is now being powered by Valve's Source Engine, and there still being many in disbelief that it's coming to Linux. Well, in fact, a native version of Postal III is still coming to Linux and it's looking like it will be here around May...
February 14, 2011
The Source Engine On Postal III Is Still Coming To Linux
Read more at Phoronix