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About that front-facing camera: the dot projector has moved from the edge to the center of the module this year, but it also holds a little secret.
The flood illuminator, previously a part of the display—and a necessary component of Face ID—has been integrated into this new dual-purpose module.
With the display assembly now independent from Face ID hardware, you might be thinking display and Face ID swaps are easier than ever now! Right? Well, pump the brakes, kid.