I've been looking into buying a PS3 recently (hey, I need to do something to pass the time before Super Smash Bros. Brawl is finally released...), and I've noticed that the 80GB PS3 seems to be disappearing.
It's no longer available from Best Buy. I asked a blue-shirt at a Best Buy if they had any 80GB PS3s. When they looked it up on the computer, I noticed that the "deleted" flag had been set on its entry. Apparently Best Buy no longer expects to carry 80 GB PS3s.
Other stores still carry it, so it could be that Best Buy is just out of stock, but I think they may know something the rest of us don't. Speculation is that a new 120GB PS3 model will be released "real soon now."
I'm wondering if the new PS3 might be released at the same time Devil May Cry 4 is released. It might make sense, since DMC4 is no longer a PS3 exclusive. They might be able to trick the press into equating DMC4 with the PS3.
Who knows. If we're lucky, and Sony is sane, this new PS3 model will come with a price cut. But given Sony's past, well, that seems to be a bit unlikely.
But I can hope...