...
Support for SOAP web services in Proxies. You can now reference a SOAP service when you create a Proxy endpoint.
Refer to the Platform section for Lifecycle Management Public APIs. You can now use Public API to publish, unpublish, deprecate, and retire APIs.
Enhancements
Added the Trust All Certificates checkbox in the Create proxy endpoint dialog. Similar to the setting in the REST Snaps, you can choose to allow your Proxy to trust self-signed, unsigned, or expired certificates in the endpoints.
API policy violations are now delivered in JSON. When a client executes an API that results in an authorization or authentication error, the error is returned in the JSON format.
Logging added to the Callout Authenticator API policy. You can now use the Snaplex logs to troubleshoot why the authentication failed when your Callout Authenticator policy rejects a client request.
Improved error output for the JSON Validator API policy. The API caller can easily determine which part of the JSON failed validation.
Wildcard endpoint support for dynamic base paths and error handling in Proxy endpoint mapping. When the base path is a path parameter, the Proxy uses this endpoint and routes through the mappings.
Improved error handling in the Developer Portal API specification editor. Specification violations now appear in the editor.
Added the Time Unit field in the Client Throttle API policy. You can now define a Request Limit value in requests per second.
API Manager now supports asynchronous API migration with Public APIs.
...