Google TPU: when/how will it be available to me?
Google has apparently said it would not be available for sale outside of Google.

http://www.forbes.com/sites/tiriasresearch/2016/05/26/google-builds-its-first-chip-just-for-machine-learning/#58ab2bcb7a92

Google also did mention it would be available to developers for Tensorflow and Cloud machine learning but otherwise it has been light on details or when this will become available.