FYI - Go SDK users, we are planning on removing the current implementation of structured JSON previews so that streaming preview output can be accessed in a manner consistent with the rest of the Automation API methods. We will follow up later by adding a way to stream structured events for all lifecycle methods in all of the SDKs (up/preview/refresh/destroy) This is a breaking change. If this will cause problems for you, please chime in with some notes in the issue: https://github.com/pulumi/pulumi/issues/6308