Apple ID will be renamed 'Apple Account' when iOS 18, iPadOS 18, and macOS Sequoia launch this fall. The change will apply to all Apple products and services.
Specifically, in the latest news, Apple said that Apple ID will be renamed Apple Account to provide a consistent login experience across Apple services and devices, and rely on users' existing authentication information.

Many people are pleased with this change from Apple because they think "Apple Account" is much clearer and more comprehensive than "Apple ID".
Apple Account will “rely on the user’s existing credentials to make the transition smooth, without the user having to change their current login information. This is especially important for users who are already familiar with the Apple ecosystem, as they don’t want to bother with updating their information.
Changing the name from Apple ID to Apple Account to have a unified account platform across operating systems will help users take full advantage of the features that Apple brings.
This renaming is a concrete example of Apple always striving to create the best experience for users. This is a step in the right direction for Apple. We can expect that in the future Apple will continue to improve and perfect its platform to bring the best experience to users.