UPDATE (11/30/2020): Espressif has confirmed the leak, officially announcing the ESP32-C3 as its first fully-RISC-V-based microcontroller product.
“ESP32-C3 attempts to address the most common needs for connected devices,” the company explains. “Security is of prime importance. Even the lowest-cost connectivity solution needs to provide an appropriate level of security for common security threats. Bluetooth Low Energy availability is useful for improving user experience and field diagnostics. While cost is a very important parameter, the availability of sufficient memory for common use-cases is equally important.”
The company’s official announcement includes confirmation that the part is based on a 32-bit single-core RISC-V microcontroller running at up to 160MHz with 400kB of static RAM (SRAM), 2.4GHz Wi-Fi and Bleutooth Low Energy 5.0 support, and 22 programmable general-purpose input/output pins.