RSS feeds are an easy way to get notified when the content of the subscription has been updated. For this site, the RSS feed is updated each time there are changes recorded in the database; the changes are identified as either new features or updates to existing features.
You can use a number of RSS applications to subscribe including web browsers, Outlook and the RSS Connector in Microsoft Teams.
Prefer an email? You can use a service like "Microsoft Flow" to receive an email when the RSS feed has been updated.
Use the following link to access the RSS feed: http://feeds.feedburner.com/Office365RoadmapWatcher