In November, SLAR's plans changed to a league of seven clubs, two each in Brazil and Uruguay with one team each in Argentina, Chile, and Paraguay.

Once the news was released, Wenceslao Tejerina, High Performance Manager for Chile, announced that they were working on a new tournament.

[12] After the announcement of the new contest, the Uruguayan Sebastián Piñeyrúa, director of the South American entity, issued the following statement: "Due to the success obtained in the American Rugby Super League in the two full seasons of 2021 and 2022, from South America Rugby, SLAR organizers, we are in the middle of negotiations with national unions in North and Central America, to plan the future growth of Rugby in the continent, for this reason, we are working with all the member unions and franchises participating in SLAR 2022, to plan and develop future competitions, by franchises and international.

[21][22] On 4 February 2021, the Brazilian side in the competition was renamed Cobras Brasil XV, dropping their affiliation with the Corinthians multi-sport club.

[23] On 13 December 2022, SLAR confirmed the replacement of Cafeteros Pro, with the reintroduction of Córdoba based team Dogos XV, in the past Ceibos.

[25] On 1 October 2024, it was confirmed that Tarucas will be joining in 2025 as the third Argentinian franchise, based in Tucumán, and representing Northwest Argentina in order to replace American Raptors.

[28][29] With the possible change of Super Rugby to a Trans-Tasman (Australasian) competition, Argentina could add a second team, the Jaguares, based in Buenos Aires, in 2021.

[34][35] In June 2023, after losing its bid for 2022, Tucumán, plus Salta and Santiago del Estero, renewed their request to enter the tournament in order to have 3 Argentine franchises in the future.

[39] A hypothetical fourth Argentine Franchise, named Litoral, a combination of following Unions regional Entre Rios, Rosario and Santa Fe is expected to enter in the tournament for the 2026 season.