Am really keen on exposing PowerApps / Flow news - this was provided from Microsoft Flow. You can read out the full post available on this link:

https://powerautomate.microsoft.com/en-us/blog/environment-variables-in-custom-connectors/

In this blog, I highlight new features for custom connectors – including the support of environment variables in custom connectors. These features provide a better experience to enable a seamless ALM (application lifecycle management) for custom connectors.