A Sony representative, speaking with Yahoo! Games, has recently confirmed that the PS3 will ship with a 60 GB HDD, with the option to upgrade.  Thus no PS3 will be shipped without a hard drive.  The only real question now is: will there be two bundles with different-sized hard drives available at launch (e.g., a 60 GB bundle vs. a 100 GB bundle), or will the optional hard drive have to be purchased seperately?  Regardless, this hard drive standardization of the PS3 by Sony is a move that is sure to benefit both developers and consumers.