Author of GPU miner contacted me. It is a miner for Nvidia GPUs and he uses seven of them. I offered him reward for releasing the miner.
I think it would be better for AMD GPU miner to come first.
Me too. But only because I have one.

Does anyone here actually have an nVidia GPU?
I think it's safe to assume both are already developed in the wild , or will be.
Apparently they are not selling, so who knows.
The reason to develop GPU miner is to distribute fairly and widely and secure the network.
AMD cards have abosolute advantage over nVidia cards among GPU miners in quantity and hashpower.
so,if there must be one GPU miner,AMD miner is the first option.
Dev,do you agree?