Okay, listen to me right this second.
If you are planning on purchasing a PS3, GET IT RIGHT NOW.
Sony is pulling a real donkey maneuver here, by calling it a price drop on the PS3's when they are really weeding out all of the 60GB models. Once they sellout the 60's, they are forcing out an only 80GB model of it, and they are ruining the Emotion Chip inside of it, which will severely impact its reverse compatibility for PSone and PS2 games. I believe they will instead be making you download the software for the compatibility like 360's do.
There are many other cons about the new PS3's that are going to be the only things available soon, so I highly recommend getting the 60GB model currently cheaper now.
The loss of some things and the addition of the extra 20GB is not going to be worth it in the end, especially since the price will be going back up to $600.
If you do decide not to get the PS3 right now though, or just don't want to at all, keep in mind that by around Christmas, the newer PS3 should be back at $500.