Official AWS PaaS Roadmap for Sitecore 9

I have a client that will be migrating an existing IaaS Sitecore 8.2 implementation to an identical IaaS infrastructure in AWS.  The customer would like to move to a PaaS infrastructure as part of the upcoming move to Sitecore 9.

 

Is there an official AWS roadmap for implementing Sitecore 9 using a PaaS infrastructure in AWS?