update with new date

Signed-off-by: Hannah Hunter <[email protected]>

Author: hhunter-ms

articles/managed-grafana/how-to-migrate-essential-service-tier.md

@@ -21,9 +21,8 @@ Choose the option that best fits your requirements and budget.
 
 We recommend that you plan your migration before the following key dates to prevent disruption:
 
-- October 31, 2025: Portal support for creating new Essential (preview) workspaces ends.
 - March 31, 2026: The Essential tier is no longer available and existing Essential workspaces will stop functioning.
-
+- August 1, 2026: Existing Essential SKU workspaces are no longer supported and wil be deleted.
 
 ## Recommended option: Upgrade to Standard service tier