notableaddedSlack calls it: New Feature
New Block Kit container block
- Announced
- APIs
- block-kit
- Severity
- notable, set by
reef/slack-rule-v1 - Source
- https://docs.slack.dev/changelog/2026/06/29/block-kit-container-block
The container block is now available for Block Kit use.
For more details about building with Block Kit, check out our Block Kit overview!
The text above is Slack's. reef added the severity, the dates it could read from the text, and the endpoints and scopes named in code.