Turkish tech site Donanim Haber claims AMD will be using the Threadripper name for its upcoming line of Zen-based HEDT processors. Along with Ryzen and a couple of other names, the Threadripper name popped up a couple of months ago in a trademark filing.
It was assumed this would be the name of AMD's SMT but now the rumor mill claims it's the name of AMD's upcoming high-end desktop processors. An announcement from AMD is expected at Computex towards the end of May or early June, with retail availability expected in the second half of June.
Reddit user Manintheamazon provides a brief overview of the new information from Donanim Haber. As always, take this with a grain of salt.