Eight Intel Xeon Phi 5110p cards are now available from ARC-TS as a technology preview. These are known as Many Integrated Core or MIC architectures, and consist of accelerator cards that fit into a Flux compute nodes. A code can then offload portions or all of the work of a compute job to the card. This can often result in improved performance.
As a technology preview, there is no additional cost for using the Phis. Anyone with an active Flux allocation can test the Phis, as long as the jobs are less than 24 hours long.
Read posts on the Flux HPC blog to get started and to see an example of the speedup a Phi can provide in Linear Algebra.