It is possible to use the normal aquagraFX 7800 on the new cards with 512mb but the cooling performance is suboptimal. AC will produce a special version for the 512mb edition. The design is almost identical to the normal aquagraFX. The block should be ready around mid-december.
AquagratiX 1800 cooling blocks are nearly ready to roll out. The block in the picture is unanodized, AC has asked which color it should be... - right now it seems that the block will be black.
The LED on the side will be red: