https://www.bbc.com/...-union/57475511
The Pro14 will rebrand as the United Rugby Championship (URC) when South Africa's four teams join the competition in 2021-22.
Sharks, Stormers, Lions and Bulls will play alongside the 12 existing sides from Ireland, Italy, Scotland and Wales in a 16-team league.
There will be one division, with end of season play-offs.
"We are taking the league to new heights," said URC chief executive Martin Anayi.
"Forming the United Rugby Championship will begin to reshape the club rugby world."
The South African sides will also be eligible to qualify for European competitions from 2022-23. The four former Super Rugby sides have replaced fellow South African outfits Cheetahs and Southern Kings in the tournament.