Enterprise administrators can now configure a custom message appended to the plugin trust warning shown before installation, via pluginTrustMessage in managed settings or MDM policy. Useful for adding organization-specific guidance.
Evidence
Plugin trust message (search for "pluginTrustMessage", "Custom message to append to the plugin trust warning")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
One source agreesOne thing we can check says the same as this entry.
Anthropic's release notes agree
Added pluginTrustMessage in managed settings to append organization-specific context to the plugin trust warning shown before installation