@mastrolinux, it was reported on the issue tracker:
that the schematic link on the Leonardo ETH product page:
https://store.arduino.cc/usa/arduino-leonardo-eth
still points to the arduino.org link:
File Not Found
which just redirects back to the arduino.cc homepage
I discovered the correct URL for that file is:
The Eagle file link has the same problem:
http://download.arduino.org/products/LEONARDOETH/Arduino_Leonardo_Eth_V1_rd.zip
The correct URL:
https://www.arduino.cc/en/uploads/Main/Arduino_Leonardo_Eth_V1_rd.zip