"red" Notes
Behind the company named "What's Next?" are the people of Arduino.org. Board called "red" is the SPI version of Uno WiFi mentioned in WiFi Link and dfu library source code. Schematic of the board is not published.
"What's Next?" offers a core package for Arduino IDE with support for their color named boards. For the "red" the package contains firmware and a tool to flash the firmware into esp8266.
The firmware for "red" in the core package is a red painted 1.0.1 version of WiFi Link firmware with some modification but with all the issues of the 1.0.1 version. Source code is not published.
I tested the RedFirmware on my SPI WiFi Link test setup with Wemos D1 and Nano clones. Atmega sketch OTA upload doesn't work.
The 1.1.0 version of WiFi Link should work with "red" after changing the SLAVE_READY_PIN to 16 in wifi-utils.h. If requested I can add OTA Atmega sketch upload with use of AVRISP library.