The site doesn't have a lot of extra information, other than that this second-gen Raven Ridge APU will likely be made on the same 12nm process as Pinnacle Ridge. You can expect somewhat higher power efficiency and performance, but nothing too revolutionary.
It seems AMD is trying to produce a CPU (Pinnacle Ridge) and an APU (Raven Ridge 2) able to be clocked higher, dedicated to the Consumer market, waiting for Ryzen @ 7nm (2019).