Google’s ‘Discover’ is a personalized content feed that serves relevant news and non-news content to mobile users. It is currently only available in Google Chrome and Chrome for Android and iOS only. A new code commit suggests that other Chromium-based browsers should soon be able to take advantage of the feature. The feature is in the early stages of development and could come to desktop users in the future as soon as Google Chrome is added to the Chrome app and Chrome Canary for Android, but the feature has not been spotted in other browsers.
Source: https://www.bleepingcomputer.com/news/google/google-is-bringing-discover-to-other-chromium-browsers/