Support for OpenAPI 3.0 in Cloud endpoint while using ESP-v2 base image

We have a requirement where we want to use additional features available in OpenAPI 3.0 but not in OpenAPI 2.0. From the available documentation, it seems like cloud endpoint/ esp-v2 only supports OpenAPI 2.0

We would like to know if there are any plans for supporting OpenAPI 3.0, or its already in development and we will have the support for OpenAPI 3.0 soon.

Start with the Cloud Endpoints and ESP-v2 documentation referenced in the issue, then determine where OpenAPI 2.0 support is defined and what ESP-v2 base-image constraints apply. The issue is complete when OpenAPI 3.0 support requirements and implementation scope are established, or the support roadmap and limitations are documented.

Written by the indexing model from the issue text.