Update PanelBar wai-aria support article

Author: pepinho24

controls/panelbar/accessibility-and-internationalization/wai-aria-support.md

@@ -12,7 +12,7 @@ position: 1
 
 This article demonstrates how to enable and use the WAI-ARIA support of the **RadPanelBar** control.
 
-The [WAI-ARIA Suite](http://www.w3.org/WAI/intro/aria) defines an approach to make web content and web applications more accessible to people with disabilities. **RadPanelBar** offers WAI-ARIA support.
+The [WAI-ARIA Suite](http://www.w3.org/WAI/intro/aria) defines an approach to make web content and web applications more accessible to people with disabilities. **RadPanelBar** offers WAI-ARIA support since the R3 2016 release.
 
 In order to enable the WAI-ARIA support, set the control's **EnableAriaSupport** property to **true** as shown in the example below.