* Go to the "Releases" section.
* Find the release you're working on by filtering.
* Click "View DataDownload".* Paste the data into a local file.
* Edit the local file and add the following at the top level of the blob (replace the VERSION variable with the version of the release, do NOT replace %LOCALE% or %OLD_VERSION% - those are substituted by Balrog/Firefox):
"openURL": "https://www.mozilla.org/%LOCALE%/firefox/$MANUALLY_REPLACE_THIS_VARIABLE_CALLED_VERSION/whatsnew/?oldversion=%OLD_VERSION%",
* Change the "name" in the blob to something unique (usually by appending "-whatsnew" to it).
* Back in the Admin UI, click "Add a new release".
* The name should match the one you just edited in the blob, version product should match appVersionbe Firefox.
* Upload the new blob.