An engineering sample of the AMD Ryzen 5 2600 processor popped up in the database of the SiSoft Sandra benchmark. The sample is named "ZD2600BBM68AF_38/34_Y", it appears to be a six-core, twelve-threaded processor with a 3.4GHz base clock, 3.8GHz Turbo and 65W TDP.
If the values are representative of the final retail version, it means a 200MHz increase versus the current Ryzen 5 1600 model.
VideoCardz notes the listing also reveals the ASUS ROG Crosshair VII Hero. Little else is known about this motherboard.