AMD has been on the offensive ever since it launched Ryzen earlier this year, with the next few weeks leading into the Ryzen ThreadRipper family of CPUs and their respective X399 chipset, but AMD also teased its mid-range Ryzen 3 CPUs destined for a couple of months from now.
AMD's upcoming Ryzen PRO family of processors were announced in the last 24 hours, with some - but not all, details on Ryzen 3. Ryzen 3 should have the same cache structure as the lowest-end Ryzen 5 processor, the Ryzen 5 1400. We will receive 8MB of L3 cache enabled, versus the 16MB of L3 cache on Ryzen 5 1500X, 1600, and 1600X. Each core will still retain its full 512KB of L2 cache, and lowered TDPs of just 65W.
We don't know the full details on Ryzen 3 just yet, but Ryzen 3 will be 4C/4T processors without SMT enabled like Ryzen 5. Ryzen 3 1300 should be a 4C/4T chip @ 3.5/3.7GHz, while the Ryzen 3 1200 will be a 4C/4T processor at 3.1/3.4GHz. We should expect the Ryzen 3 1300X as well, but we'll have to wait and see about details on that in the near future.