Prada, long-term sponsor of Italian challenger of record Luna Rossa, are reported to have got the naming fights for the challenger series at the next America's Cup in Auckland 2021.

America's Cup leaks keep coming via the Italian media with the latest report suggesting a stronger profile for Prada at the next event as they get set to replace long-term sponsor Louis Vuitton.

Italian yachting site Vela also suggests that Emirates Team New Zealand will release the 2021 Cup protocol in Auckland on September 29, which is line with the planning already announced by the holders.

Glamour Italian fashion house Prada are the backers of Italian syndicate Luna Rossa who are the challenger of record, working in tandem with Team New Zealand to shape the new rules and class for yacht for the 36th editon of the Cup to be sailed in Auckland.

The challenger series will reportedly be renamed the Prada Cup with the winner of that going on to face the Kiwis in the match for the America's Cup.

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Louis Vuitton have been the naming rights sponsor of the challenger series since 1980.

There were strong suggestions they wouldn't be involved in this year's Cup in Bermuda because of their frustration at the format but they did retain their sponsorship.

The latest leaks follow earlier confirmed reports of a monohull design returning to the Cup, replacing the multihulls of the last three editions sailed since 2010. The details of the design of the monohulls are unlikely to be revealed until late November.

There are also reportedly going to be warmup events sailed in the new yachts in 2019 and 2020, hosted by other countries.