I've recently got into bitcoin mining using my PS3.

On Anandtech they have previewed the future of AMD graphics cards. They are moving away from a VLIW design and moving towards SIMD.

It looks like that the new GPU design will be moving towards something more nvidia like and therefore bad at bitcoin mining.

Apart from moving to ASIC's and FPGA's it looks like GPU bitcoing mining is going to slowdown dramatically.