v2.11 – Graph API – Documentation – Facebook for Developers

/page/* — User information will not be included in GET responses for any objects owned by (on) a Page unless the request is made with a Page access token. This affects all nodes and edges that return data for objects owned by a Page. /page/insights — This edge will require a Page access token of the page in question for all metrics. /page/tabs — Creating custom tabs with POST operations …

https://developers.facebook.com/docs/graph-api/changelog/version2.11