But in a statement, RA did not express immediate interest to join their Pacific neighbours. Rather, they "acknowledge" NZR's "preferred position" in regards to a future competition.
"[We] look forward to working constructively with New Zealand Rugby in the coming weeks," they said.
RA added they will continue discussions with stakeholders as well as their "valued Sanzaar joint venture partners".
South Africa Rugby said in a statement they have been "kept abreast of the thinking in New Zealand" in discussions surrounding the future.
"As part of the SANZAAR joint venture we will be examining how the mooted new competition will fit into the existing contracted competitions," they added.
Both bodies recognise the need to reassess their futures and the viability of competitions following the Covid-19 pandemic, and its impacts on their respective positions.
Details of the Aratipu review were leaked earlier this month, and suggested New Zealand wanted only two Australian teams in the new competition, as they did not believe more could compete with all five of their teams.
That alarmed Australia and they subsequently considered options around their own domestic competition.
New Zealand hopes the new tournament will deliver exciting, competitive rugby and a product for fans to enjoy.