Premiership Rugby, the RFU and the Championship clubs are delighted to confirm the format for next year's Premiership Rugby Cup.
The Premiership Rugby clubs will face the RFU Championship sides - with the competition kicking-off on September 8, 2023.
The pool stages will take place over five consecutive weekends from the weekends September 8-10, October 6-8 with the semi-finals held over February 9-11 and the final over the weekend of March 15-17.
The 24 teams will be split into four pools of six - based on league standings at the end of the current 2022/23 season.
Further details and the draw for the pool stages will be given in due course.
Phil Winstanley, Premiership Rugby’s Rugby Director said: "It is many years since the Premiership and Championship Clubs clashed in a Cup competition.
"The Championship performs a crucial role within the English game and we’re looking forward to renewing some rivalries of old.
"With the Rugby World Cup taking place in France, this competition will no doubt provide the best, young English talent with an opportunity to stake a claim in squads before the start of the Gallagher Premiership Rugby campaign."
Conor O’Shea, RFU Executive Director of Performance Rugby said: "We’re really pleased to confirm that next season’s Premiership Rugby Cup will include both the Premiership and Championship clubs and are excited to see this new format come to fruition and form part of the longer-term solution for the game.
Steve Lloyd, Chair of the Championship Clubs Committee said: "The new Cup format is the result of great collaboration between the Championship, RFU and Premiership Rugby.
"The clubs are delighted with the opportunity a different format brings as well as the experience of playing Premiership sides and the opportunity to welcome new fans into our clubs and grow our audiences."