The source found an Apple patent application in the US Patent and Trademark Office database describing a design that may be used in MacBook laptops in the future.
This is a retractable support in the form of a leg or stand. It allows you to give your laptop a more comfortable position for working on the keyboard and improve ventilation.

As conceived by the authors of the application, the support can be brought into the working position by a built-in mechanism or manually by the user. The actuator can be pneumatic, magnetic, piezoelectric or electromechanical. An option is provided for automatic extension when a certain condition is met, for example, the sensor of the screen position relative to the main part of the laptop is triggered.
As far as ventilation is concerned, the rotation speed of the laptop fan may vary depending on whether the support is extended or not.
In an alternative design, the slide hides the port connectors.

Considering that this is only a patent application, it is impossible to say whether the design described in it will be used in mass production, and if so, when.
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