There is more clarity on when AMD plans to launch its 2nd generation Ryzen "Pinnacle Ridge" processors, along with companion 400-series chipsets. Retailers in Japan, citing upstream suppliers, expect AMD to launch Ryzen # 2000-series (or "Ryzen 2") processors in March 2018, along with two motherboard chipset models, the top-tier AMD X470, and the mid-range AMD B450. An older report pegged this launch at February. The two chipsets are differentiated from their current-generation 300-series counterparts in featuring PCI-Express gen 3.0 general purpose lanes. The "Pinnacle Ridge" processors, on the other hand, are expected to be optical-shrinks of current Ryzen "Summit Ridge" silicon to the new 12 nm silicon fabrication process, which will allow AMD to increase clock speeds with minimal impact on power-draw.AMD Ryzen 2 "Pinnacle Ridge" processors will be built in the existing socket AM4 package, and are expected to be compatible with existing socket AM4 motherboards, subject to BIOS updates by motherboard manufacturers. AMD plans to nurture the socket AM4 ecosystem till 2020. Future motherboards based on AMD 400-series chipsets could also feature compatibility with existing "Summit Ridge" Ryzen processors. These motherboards will come with out of the box support for Ryzen "Raven Ridge" APUs, something that requires BIOS updates on current 300-series chipset motherboards.