Adobe Analytics 2.0 API changes in the last few weeks: any documentation?

Reporting.

Additional info from support: 

In the future, Adobe may add additional fields to the JSON response in their APIs. Customers should not rely on strict JSON parsing and should be flexible to the presence of new fields in the future.

Well-built (interoperable) JSON parsing and data handling systems are expected to ignore new members that they don't understand and thus new members should be addable to an object without affecting existing members.

In addition, the Report API documentation Reporting API (adobe.com) specifically states, "This guide does not include descriptions for all request and response parameters for the reports endpoint. "

Adobe reserves the right to add additional members to JSON objects and considers the addition of new members to existing objects to be a non-breaking change and thus does not version API methods when new members are added. A breaking change, which would result in versioning of the API methods, would be something like changing the name of a member or deleting or no longer returning a member.