https://privacysandbox.com/news/privacy-sandbox-next-steps/
…Another important element of Privacy Sandbox involves the way that third-party cookies are treated in Chrome, and last summer, we shared that we were exploring a new approach. As we’ve engaged with the ecosystem, including publishers, developers, regulators, and the ads industry, it remains clear that there are divergent perspectives on making changes that could impact the availability of third-party cookies…
we’ve made the decision to maintain our current approach to offering users third-party cookie choice in Chrome, and will not be rolling out a new standalone prompt for third-party cookies…