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infochangedSlack calls it: Release

Release: Slack CLI v4.3.0

Announced
APIs
slack-cli
Severity
info, set by reef/slack-rule-v1
Source
https://docs.slack.dev/changelog/2026/06/18/slack-cli

Version 4.3.0 of the Slack CLI is here!

  • The slack create command now accepts the --app flag to scaffold a project and automatically link it to an existing app.
  • The slack external-auth add-secret command is now available to all apps, not just Slack-hosted apps.
  • The Slack CLI now supports mcp_server manifest fields for connecting MCP servers to the Slackbot MCP Client.

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.