Half-Life 2 Preloading from Steam: Part 2

BrainsVolpe writes "For those of us on Steam, we can continue our 'preloading'of Half-Life 2. This time around we'll be downloading 'the majority of the audio of Half-Life 2 in encrypted form.' Does this mean we'll be getting HL2 before September 30th? Only Valve knows for sure... sorta."