Has anybody heard anything about GPU miners for Riecoin? I've searched, but nothing comes up - the coin isn't famous enough yet to draw attention of GPU miners developers, IMHO.
Most likely, a GPU miner will eventually be created, but will take significant development time. With the somewhat-similar Primecoin, GPU miners still haven't been released that work significantly better than CPUs, and various CUDA and OpenCL projects attempting to implement primecoin mining on a GPU have either failed or launched with very poor results.