from what i heard, there is a ps3 slim and there will be a price drop but sony does not want to confirm any of it until around or after the holiday season. mainly because they're going to let the stock of the current models dry up before putting the new ones out, and if they tell people now and confirm it and everything, they're afraid that people will just stop buying ps3's and wait until the new, cheaper model shows up.
at least that's just what i read/heard. but yeah, i don't know what sony can do to keep sales strong if the price drop isn't an actuality. there's really good samsung blu-ray players selling around my area (at walmart specifically) for more than 250-300 less than a ps3. so there goes one selling point for the ps3, and for me (opinion alert!) all the good games on PS3 can also be found on the 360, so they don't have the exclusivity thing going for them either. a price-cut is pretty much their only option to stay in the game, no pun intended.