Microsoft has added some new features to Xbox.com: Activity Feeds and Suggested Friends. You should remember those from your Xbox One dashboard.
The new upgrade will help the users to discover and interact with family, friends and other games, being at a PC or on your tablet/phone, without necessarily having to power on your console.
- Activity Feed: You can see everything on your feed, make text posts, and like, comment on, and share feed items directly from your browser.
- Suggested Friends: This feature will help you expand your friends network and find new people to play on Xbox Live with.
If you want to check out the new features you should head over to Xbox.com.
Source: Major Nelson