Update sql-api-sdk-python.md

Author: gahl-levy

articles/cosmos-db/sql/sql-api-sdk-python.md

@@ -42,7 +42,7 @@ ms.custom: devx-track-python
 |**Current supported platform**|[Python 3.6+](https://www.python.org/downloads/)|
 
 > [!IMPORTANT]
-> * Versions 4.3.0b2 and higher only support Python 3.6+. Python 2 is not supported.
+> * Versions 4.3.0b2 and higher support Async IO operations and only support Python 3.6+. Python 2 is not supported.
 
 ## Release history
 Release history is maintained in the azure-sdk-for-python repo, for detailed list of releases, see the [changelog file](https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/cosmos/azure-cosmos/CHANGELOG.md).
@@ -56,6 +56,7 @@ Microsoft provides notification at least **12 months** in advance of retiring an
 
 | Version | Release Date | Retirement Date |
 | --- | --- | --- |
+| 4.3.0 |May 23, 2022 |--- |
 | 4.2.0 |Oct 09, 2020 |--- |
 | 4.1.0 |Aug 10, 2020 |--- |
 | 4.0.0 |May 20, 2020 |--- |