It could be a nice accessibility feature as well iOS is going to leverage that info for Spotlight.

Called Live Text, this feature lets you highlight, copy and paste text in photos. The new version of iOS also scans your photos for text. There are many new features across the board, such as a new Weather app, updated maps in Apple Maps, an improved version of FaceTime, and more. For instance, you can create a Work mode, a Sleep mode, a Workout mode, etc. In addition to “Do not disturb,” you can configure various modes - you can choose apps and people you want notifications from and change your focus depending on what you’re doing. The biggest change of iOS 15 is a new Focus mode. It is a free download and it works with the iPhone 6s or later, both generations of iPhone SE and the most recent iPod touch model (iPad users will also be able to update to iPadOS 15 and watchOS 8 today).

Apple has just released the final version of iOS 15, the next major version of the operating system for the iPhone.

Ios 15 download