It's for Phoronix to test new ARM-based software products, mainly benchmarking. The second paragraph:
This cluster will be used for delivering some interesting ARM Linux benchmarks, of course! It's also being used for Phoronix Test Suite purposes for creating more MPI/cluster benchmarks for some of the commercial/enterprise clients, coming up with more ARM Linux benchmarks in general, and this hardware is also going to be part of a much larger (~96+ ARM core cluster - details to be shared at a later time) cluster.