datestamp release notes

Author: Dottenpixel

RELEASENOTES.general.md

@@ -2,7 +2,7 @@
 <!-- On release, add general notes here. In time the legacy release notes will be add to this -->
 
 
-## 2.21.0 - Upcoming
+## 2.21.0 - April 20, 2023
 
 ## Fixed
 

RELEASENOTES.md

@@ -1,7 +1,7 @@
 <!-- Release notes authoring guidelines: http://keepachangelog.com/ -->
 <!-- !!! THIS FILE IS AUTO-GENERATED !!! DO NOT EDIT THIS FILE MANUALLY !!! -->
 
-## Release 2.21.0 - Upcoming
+## Release 2.21.0 - April 20, 2023
 
 ## Fixed
 - Update transparency values (rgba and design tokens) with transparent SLDS global styling hooks
@@ -48,6 +48,16 @@
 #### Added
 - Configured `--slds-c-button-text-color-hover` Styling hook in Button with dual-stateful to accurately apply the text color on-hover 
 
+### [Combobox](https://www.lightningdesignsystem.com/components/combobox)
+#### Fixed
+- Fixed by adding tabindex for `scrollable region must have keyboard access` wcag issue
+- Fixed by adding dynamic Ids for duplicate-id-aria issue
+- Fixed by adding unique Ids,aria-label for `aria-allowed-attr` wcag issue
+
+### [Combobox](https://www.lightningdesignsystem.com/components/combobox)
+## Added
+Added `aria-label` to meet accessibility requirements specifically for screen readers.
+
 ### [Global Navigation](https://www.lightningdesignsystem.com/components/global-navigation)
 #### Added
 - Added `role="presentation"` for globlal navigation's overflow tab item 
@@ -81,6 +91,8 @@
 
 ### [Popovers](https://www.lightningdesignsystem.com/components/popovers)
 #### Added button to the story `body-max-height-small` to fix scrollable-region-focusable wcag issue.
+#### Added
+- Added `title` attribute to meet accessibility requirements.
 ## 2.19
 #### Fixed
 - Fixed hardcoded walk through header and alt image paths