Chiphell has scored some pictures of the coolers for the upcoming Radeon HD 4800-series from AMD and at first glance, the coolers don't look that different from the current ones. The X2 cooler seems to have scored a heatpipe in addition to having had the second heatsink upgraded to copper instead of aluminum.

The single chip high-end cooler also seems to feature heatpipe cooling, although if you look closely it appears to have a pair of heatpipes nestled underneat the plastic shrouding. The cooler for the DDR3 cards appears to be almost identical to that of the early single-slot Radeon HD 3850 cards with what appears to be some cosmetic changes.

There's also a picture of what is meant to be the cooler for a mid-range graphics card, which might be called the 4650, but you can draw your own conclusions based on the design.

You can find the pictures here as we couldn't locate them over at Chiphell.