Wiki - Sprint 148 Update
Features
@mention users and groups
You can now @mention users and groups in a wiki page. This makes documents like a team's contact page, guidance documents and knowledge documents richer. The image below is an example showing a sprint retrospective with tasks and the person responsible.

In addition, you can also select a user or a group from the autosuggestion by typing "@" in the wiki edit page. The person mentioned will also get notified by mail.

Finally, you can also click on the @mentioned user to view the profile information card. This feature has been prioritized based on this feature suggestion.
Next steps
Note
These features will roll out over the next two to three weeks.
Head over to Azure DevOps and take a look.
How to provide feedback
We would love to hear what you think about these features. Use the feedback menu to report a problem or provide a suggestion.

You can also get advice and your questions answered by the community on Stack Overflow.
Thanks,
Gopinath Chigakkagari (Twitter)