According to a report, Microsoft will be deprecating the People Bar in an upcoming Windows 10 Insider Preview. This doesn't mean that the feature is going away just yet, and it should be in 19H1.
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During Microsoft's new Windows Insider webcast, the company released a new Windows 10 build for the Fast ring, bringing the build number to 16184. It contains the new My People hub.
Microsoft announced today the release of Windows 10 Insider Preview build 15014. Unfortunately, it has also announced the delay of the My People experience until the next major update.