Sony released some new pictures of the PS3 which shows the styling differences between the 20GB and 60GB version.
For now, the only differences externally (other than the lack of a HDMI port and media reader on the lesser model) is the 60GB version's silver trim around the Blu-ray drive slot and below the four front-mounted USB ports as well as silver Spider-Man-esque PlayStation 3 lettering on top of the console. The 20GB model makes do with black trim all around.
The PS3 is expected on November 17, the basemodel will retail for $499 and the one with 60GB HDD, multi-card reader, HDMI and wireless will cost $599. However, yesterday Sony admitted the PS3 isn't even in production yet, so don't expect much quantity if they're planning to release it in November. Check it out over here.