According to Hermitage Akihabara, retailers in Japan are gearing up for the Ryzen 2 launch in March this year, which should bring decent performance improvements thanks to an optical shrink.
According to an earlier roadmap leak, Pinnacle Ridge can be considered as the "tick" in AMD's CPU lineup as it will be based on the same Summit Ridge architecture or Zen+ cores, which should bring slight IPC improvement, mostly thanks to the 12nm LP manufacturing process.
It is most likely that AMD will be able to squeeze higher clocks and better power efficiency, and some rumors also suggested higher memory frequency support.
As noted, the new Ryzen 2000 series chips will be paired up with the new 400 series chipset, including the X470 and B450-based motherboards. While these will be based on the same AM4 socket, it is still not clear if the 300-series chipset motherboards will be supporting the new Ryzen 2000 series CPUs.
Hopefully, more information will surface as soon as CES 2018 show kicks off next week.