In 2020 Riot Games started a program to create skins for League of Legends' champions that didn't receive any for a long time. Cosmic Sting Skarner, Resistance Singed or even the upcoming Marauder skin for Kalista are great examples.
Before starting this project, many champions had been waiting for a new skin for more than a thousand days. With the release of the next patch, only one will be left: Shyvana.
Shyvana has been waiting for 1666 days. Her last skin was released in May 2016
She will soon be joined by two other champions: Wukong (the latest skin was released in April 2018) and Rumble (last skin in November 2018).
It remains to be seen if Riot Games will release a skin for Shyvana in 2021.
Original content by "Cthulhu".