This is the replacement for Toyota's 5+ Club.
Extracted from a UK dealer's website in advance of Toyota's embargo:
Toyota Relax
Toyota Relax is a service activated warranty, which is available to Toyota drivers of vehicles under 10 years old* from 1st June 2021.
With Toyota Relax, customers who bring their Toyota vehicle to their participating dealer for a service will benefit from an additional 12-month (10,000 miles) warranty, included in the price of the