Bitcoin Gold is a new hard fork planned by Jack Liao (CEO of LightningASIC), that will happen on October 25. It's main aim is to decentralize mining by changing the Proof-of-Work algorithm to ZCash's [Equihash algorithm](https://z.cash/blog/why-equihash.html), and they promise it'll switch to a different PoW when ASICs are launched.

Although they don't have an official website, these can be used to contact them:

- https://github.com/BTCGPU/BTCGPU
- https://twitter.com/btcgpu

UPDATE: http://btcgpu.org is the only official website.