http://www.techpowerup.com/185854/new-asic-bitcoin-mining-products-producing-350-ghash-s-from-kncminer.html
https://www.kncminer.com/
And here it is. To crush all your hopes and dreams of being able to use your Radeon GPUs to perform BitCoin mining forever... the BitCoin excavator by KnCMiner. Enjoy or hate.
(This could just make a push for other types of digital currency, like LiteCoin. Currency only has value is there is supply and demand. If the supply is far greater, and demand is lower, the currency trade-in value for real dollars will drop. Even with all the power behind BitCoin software and networks, a BitCoin only has value if it can be traded for real money.)