So far there is no binary or sources released. Maybe a bounty should be set by the community to be tempting enough for its release.
Also, why should we have a wide spread GPU mining if most of people just have 1 GPU on their machines.
It would attract Litecoin GPU rigs owners. The supply of coins would increase.
Afterall it may be interesting to keep GPU miner out of the community so many CPU owners can at least try to solo or pool mine.