The unified origin trial for the Privacy Sandbox relevance and measurement APIs (Topics, FLEDGE and Attribution Reporting) is available in Chrome Beta. We plan to ramp up to approximately 50% of the Chrome Beta population within the next two weeks. We will continue to run the origin trial in Chrome Beta to evaluate the functionality of the APIs and the accompanying user controls. Technical testing is an important first step in the origin trial process; developers are encouraged to provide feedback on API functionality, documentation and ease of integration. To get support, report issues, or provide feedback please see these resources for Topics
and Attribution Reporting
We will provide updates soon on when we expect to advance the origin trial to Chrome Stable, with increased traffic volume to support additional testing.