This changelog rounds up the developer and builder updates in HubSpot's Fall Spotlight 2026 release: what's now generally available on Developer Platform version 2026.09, the new and updated APIs , the APIs entering public beta , and the latest AI builder tools .
Summary extracted from the official source text. Verify details on the source page.
| Platform | HubSpot |
|---|---|
| Effective date | No date published |
| Precision | n/a |
| Published | 2026-09-15 |
| Categories | API version sunsetDeprecationBreaking / action required |
| Tags | — |
| Official source | HubSpot developer changelog ↗ |
| Fetched | 2026-10-17T03:44:00+00:00 |
| First seen | 2026-10-17T01:05:46+00:00 |
| Status | Listed by the source |
| Stable ID | hubspot-d7a7c65c7e · JSON |