Limited details as it is only a white paper. I like the liquid metal approach and an eventual movement to Thorium, not to mention that it has financial backers.
Transatomic Releases Details of New Reactor Design
https://neutronbytes.com/2016/07/10/transatomic-releases-details-of-new-reactor-design/ (https://neutronbytes.com/2016/07/10/transatomic-releases-details-of-new-reactor-design/)
I'm still amazed at how we as a country let this research and technology sit dormant for so long.