Firefox/whatsnew
From MozillaWiki
< Firefox
Overview
/whatsnew is a channel owned by Engagement and Firefox Product Marketing.
Working with release engineering, we are able to redirect a newly updated user to an experience which can highlight new features of the browser.
If you have any questions, or you would like to add your feature to a future version, please contact us at engagementrequest@mozilla.com.
Past sample pages: