Here is an interesting article on the most prominent trends in the world of high performance computing in the last one year, discussing topics from machine learning to new processors to exascale.
And here is the latest TOP500 supercomputer list published in November 2016, for those not already aware of it.
This lists and ranks the 500 most powerful computer systems in the world. The first list goes back to 1993. TOP500 publishes an updated list of the supercomputers twice a year – the first happens in summer during the International Supercomputing Conference (ISC) in Germany, and the second one is presented at the Supercomputing Conference (SC) in November each year.