Merge pull request #88796 from mrbullwinkle/mrb_09_17_2019_retention

update retention info

Author: PRMerger18

articles/azure-monitor/app/pricing.md

@@ -12,7 +12,7 @@ ms.workload: tbd
 ms.tgt_pltfrm: ibiza
 ms.topic: conceptual
 ms.reviewer: mbullwin    
-ms.date: 09/04/2019
+ms.date: 09/17/2019
 ms.author: dalek
 
 ---
@@ -147,7 +147,7 @@ In each retained record, `itemCount` indicates the number of original records th
 ## Change the data retention period
 
 > [!NOTE]
-> We've temporarily removed this feature while we address a possible issue.  We'll have it back by mid-September 2019.
+> We've temporarily removed this feature while we address a possible issue.  We'll have it back by the first week in October 2019.
 
 The default retention for Application Insights resources is 90 days. Different retention periods can be selected for each Application Insights resource. The full set of available retention periods is 30, 60, 90, 120, 180, 270, 365, 550 or 730 days.