Merge pull request #235411 from PatAltimore/patricka-ubuntu-support

Ubuntu support note

Author: prmerger-automator[bot]

articles/iot-edge/support.md

@@ -66,6 +66,9 @@ Modules built as Linux containers can be deployed to either Linux or Windows dev
 
 All Windows operating systems must be minimum build 17763 with all current cumulative updates installed.
 
+> [!NOTE] 
+> [Ubuntu 18.04 LTS ends standard support](https://ubuntu.com/blog/18-04-end-of-standard-support) on May 31st, 2023. Beginning June 2023, Ubuntu 18.04 LTS won't be an IoT Edge *tier 1* supported platform. Ubuntu 18.04 LTS IoT Edge packages are available until Nov 30th, 2023. IoT Edge system modules Edge Agent and Edge Hub aren't impacted. If you take no action, Ubuntu 18.04 LTS based IoT Edge devices continue to work but ongoing security patches and bug fixes in the host packages for Ubuntu 18.04 won't be available after Nov 30th, 2023. To continue to receive support and security updates, we recommend that you update your host OS to a *tier 1* supported platform. For more information, see the [Update your IoT Edge devices on Ubuntu 18.04 LTS announcement](https://azure.microsoft.com/updates/update-ubuntu-1804/).
+
 #### Windows containers
 
 We no longer support Windows containers. [IoT Edge for Linux on Windows](iot-edge-for-linux-on-windows.md) is the recommended way to run IoT Edge on Windows devices.
@@ -81,7 +84,7 @@ The systems listed in the following table are considered compatible with Azure I
 | [Debian 11](https://www.debian.org/releases/bullseye/) | ![Debian 11 + AMD64](./media/support/green-check.png) |  | ![Debian 11 + ARM64](./media/support/green-check.png) |
 | [Mentor Embedded Linux Flex OS](https://www.mentor.com/embedded-software/linux/mel-flex-os/) | ![Mentor Embedded Linux Flex OS + AMD64](./media/support/green-check.png) | ![Mentor Embedded Linux Flex OS + ARM32v7](./media/support/green-check.png) | ![Mentor Embedded Linux Flex OS + ARM64](./media/support/green-check.png) |
 | [Mentor Embedded Linux Omni OS](https://www.mentor.com/embedded-software/linux/mel-omni-os/) | ![Mentor Embedded Linux Omni OS + AMD64](./media/support/green-check.png) |  | ![Mentor Embedded Linux Omni OS + ARM64](./media/support/green-check.png) |
-| [RHEL 7](https://access.redhat.com/documentation/red_hat_enterprise_linux/7) | ![RHEL 7 + AMD64](./media/support/green-check.png) | ![RHEL 7 + ARM32v7](./media/support/green-check.png) | ![RHEL 7 + ARM64](./media/support/green-check.png) |
+| [RHEL 7](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7) | ![RHEL 7 + AMD64](./media/support/green-check.png) | ![RHEL 7 + ARM32v7](./media/support/green-check.png) | ![RHEL 7 + ARM64](./media/support/green-check.png) |
 | [Ubuntu 18.04 <sup>2</sup>](https://wiki.ubuntu.com/BionicBeaver/ReleaseNotes) |  | ![Ubuntu 18.04 + ARM32v7](./media/support/green-check.png) |  |
 | [Ubuntu 20.04 <sup>2</sup>](https://wiki.ubuntu.com/FocalFossa/ReleaseNotes) |  | ![Ubuntu 20.04 + ARM32v7](./media/support/green-check.png) |  |
 | [Ubuntu 22.04 <sup>2</sup>](https://wiki.ubuntu.com/JammyJellyfish/ReleaseNotes) |  | ![Ubuntu 22.04 + ARM32v7](./media/support/green-check.png) |  |