Developer updates for June 2026
June brings new CRM and customer success signals, improved subscription-status histories, expanded Knowledge Vault support for structured data, app object activity association controls, quote module customization, CLI improvements, custom event timeline configuration, and Remote MCP server capabilities for content analytics and landing page creation.
June’s developer updates include new CRM and customer success signals, cleaner subscription-status histories, expanded Knowledge Vault support for structured data, app object activity association controls, quote module customization, and several CLI improvements. This roundup also covers custom event timeline configuration and new Remote MCP server capabilities for content analytics and landing page creation.
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HubSpot-hosted domains moving to TLS 1.2 minimum
HubSpot will automatically update the minimum TLS version for HubSpot-hosted domains from TLS 1.0 or 1.1 to TLS 1.2 on October 14th, enhancing security for all hosted domains.
End of Support for v1-v3 APIs and Legacy Apps
HubSpot is ending support for v1-v3 APIs, legacy public apps, and legacy private apps effective September 2027. Customers and partners have a 12-month window from the announcement to migrate to supported alternatives.
Fall 2026 Spotlight - Developer and Builder Updates
HubSpot's Fall 2026 release introduces new features on Developer Platform 2026.09, including updated APIs, new beta APIs, and AI builder tools. This changelog covers non-breaking updates; see the separate breaking changes article for legacy API deprecations.