# Claude Platform Claude Platform release notes — June 22, 2026

- Product: Claude Platform (https://whatsnew.fyi/product/claude-platform)
- Vendor: Anthropic
- Date: 2026-06-22
- Original notes: https://platform.claude.com/docs/en/release-notes/overview#june-22-2026
- Permalink: https://whatsnew.fyi/product/claude-platform/releases/2026-06-22-claude-platform-release-notes-june-22-2026

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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MCP tunnels (research preview): the management API moved from /v1/organizations/tunnels on the Admin API to /v1/tunnels on the Claude API. The new surface uses the anthropic-beta: mcp-tunnels-2026-06-…

- **changed** — MCP tunnels management API moved from /v1/organizations/tunnels on the Admin API to /v1/tunnels on the Claude API
- **changed** — MCP tunnels now use the anthropic-beta: mcp-tunnels-2026-06-… header