The best small updates Apple didn't mention at WWDC
What new animation is introduced in the iOS 18 beta when the side buttons on the iPhone are pressed?

The iOS 18 beta introduces a new animation when the side buttons on the iPhone are pressed, making it look like you're pushing the bezel into the screen a little bit. This animation adds a touch of whimsy and may also serve as a practical visual indicator for future iPhones with solid-state side buttons that simulate a click with vibration instead of physically moving.
How does the new language feature in iOS 18 beta facilitate bilingual typing without constant toggling?

The new language feature in iOS 18 beta allows users to type in two languages at once without constant toggling by setting up multiple keyboards in the device settings. This enables bilingual people to switch between languages seamlessly while typing, without having to manually change the language each time. The feature uses an intelligent autocorrect system that adapts to the user's language preferences, making it easier to type mixed-language texts without encountering incorrect autocorrect results.
What unique functionality does the flashlight app in iOS 18 beta offer on iPhone 15 Pro models?

The flashlight app in iOS 18 beta offers unique functionality on iPhone 15 Pro models by allowing users to adjust the luminance and shape of the beam. When you tap the flashlight icon, a vertical slider appears, enabling you to raise or lower the brightness. Additionally, you can slide your finger left and right to adjust the shape of the beam. This feature is exclusive to iPhone 15 Pro devices, as they have a special flash not found on other iPhones.