[DOC] The percentiles aggregation is coming in 1.1.0.

docs/reference/search/aggregations/metrics/percentile-aggregation.asciidoc

@@ -1,5 +1,8 @@
 [[search-aggregations-metrics-percentile-aggregation]]
 === Percentiles
+
+coming[1.1.0]
+
 A `multi-value` metrics aggregation that calculates one or more percentiles
 over numeric values extracted from the aggregated documents.  These values
 can be extracted either from specific numeric fields in the documents, or