IBM is opening up licensing Power8 cores to third parties, and starting a new consortium with Nvidia, Google, and Mellanox to push it. Looks like Nvidia is pretty deeply involved.

http://arstechnica.com/information-technology/2013/08/ibm-to-begin-arm-style-licensing-of-power-cpu-architecture/

http://asmarterplanet.com/blog/2013/08/open-and-collaborative-development-is-the-future-of-cloud-computing.html