Value_Hunter, I don't agree "- this will be seen as very...

Value_Hunter, I don't agree "- this will be seen as very negative for commodities."

The Yuan devaluation will most likely increase commodity prices as well as boost consumption, the whole idea of the devaluing the Yuan is to boost China's competitiveness and increase export sales, you don't increase export sales without using more input materials. The cost of raw materials is already low, so the cost of Ni, Cu, Pb, Zn and IO will not be the dampener on buying.
The fact that China has devalued the Yuan means that they're concerned about growth and the Gov't will continue to support their 7% growth target. China is already moving on the Silk Road economic project and once it comes up to speed it will be massive.