Apple's macOS Sequoia 15.2 update reveals the existence of unannounced 'MacBook Air (13-inch, M4, 2025)' and 'MacBook Air (15-inch, M4, 2025)'

It has been discovered that the macOS Sequoia 15.2 update on December 11, 2024 contains a software file for the M4-equipped MacBook Air, which was not yet released at the time of writing.

macOS Sequoia 15.2 Confirms New M4 MacBook Air Models Are Coming - MacRumors
https://www.macrumors.com/2024/12/11/macos-sequoia-15-2-m4-macbook-air-leak/

Apple testing M4 MacBook Air with ultra-wide camera & Center Stage support | AppleInsider
https://appleinsider.com/articles/24/12/11/m4-macbook-air-leaked-in-macos-sequoia-152-update-regulatory-documents

The M4-equipped MacBook Air model has not yet been announced at the time of writing, but it is rumored to be released in the first quarter of 2025 (January to March), and as of October 2024, it was reported that production would begin soon.

Will Apple soon start production of the M4-equipped MacBook Air? Rumors of the M4-equipped Mac Studio and 11th-generation iPad - GIGAZINE

In macOS Sequoia 15.2, the MacBook Air (13-inch, M4, 2025) and the MacBook Air (15-inch, M4, 2025) were referenced. At the time of writing, the latest MacBook Air model was the M3 model, and this leak suggests that the M4 model will be released soon.

In addition, Apple-related news site AppleInsider reports that the document it obtained mentions a 'front ultra-wide-angle camera.' The current M3 model has a 1080p FaceTime HD camera on the front, but AppleInsider says that this front camera may be upgraded.

It is rumored that Apple is working on equipping its entire Mac lineup with the M4, and in addition to the MacBook Air, it is said that the M4-equipped Mac Studio may also be released in 2025.