As mentioned in the original changelog post, the Lists beta was separated into two phases. As of November 20th, 2023, release 2 has been made available for you to explore. With this release, developers are now able to create and delete lists via an API call. The Lists API documentation has been updated to reflect these enhancements and we encourage you to join the dedicated Slack channel to discuss what is working and what can be improved.
Why is this changing?
Lists have evolved over the years to support more advanced filtering criteria such as custom behavioral events. Lists also support multiple object types including Contacts, Deals and Companies. The Contact Lists API has not scaled in concert with Lists and, starting today, we are working to change that with the introduction of the V3 Lists API.
We have created a dedicated slack channel in the HubSpot Developer slack group to encourage discussion around this beta. You can find it by joining the slack group and searching for #lists-api-v3.