Your Hardware Enablement Stack (HWE) is supported until...

What does this mean? 

I got this message when i logged into my Ubuntu 20.04.2 LTS terminal the other day. 

Your Hardware Enablement Stack (HWE) is supported until April 2025.

You can also check the message with the command

hwe-support-status --verbose

According to the wiki it means.

The Ubuntu LTS enablement (also called HWE or Hardware Enablement) stacks provide newer kernel and X support for existing Ubuntu LTS releases. These enablement stacks can be installed manually but are also available when installing with Ubuntu LTS point release media.