You will see this used often during presentations involving the Apple Watch, child-friendly features, or "soft" software updates. The rounded terminals give it a friendlier, more approachable look.
If you are a designer or a student trying to replicate the Apple aesthetic in Keynote, PowerPoint, or Google Slides, follow these rules: what font does apple use in their keynote presentations
The font is "intelligent." It automatically adjusts tracking (the space between letters) and bashline alignment depending on the point size to ensure it is readable from the back of a large auditorium. You will see this used often during presentations