Now Windows leaker Ajith on Twitter has uncovered the feature in more detail in the latest version of the app, posting the screenshot above.
The screenshot shows a Calls item will be added to the app menu, which will feature a traditional keypad and which will also let you search your contacts.
The feature is supported by permissions in the Settings app.
The Your Phone app is rapidly gaining the features which would make it a compelling option for desktop users who wish to handle their phones a little less.
At this point, it is not clear when the feature will be arriving, but I suspect it will not be too long.