The design of the MacBook Air has remained largely consistent since the M2 model was introduced in 2022. Therefore, there are no significant design changes between the MacBook Air M4 and M2 models. Both models feature the same modern design, which includes a sleek and lightweight aluminum unibody construction. The M4 model retains the same dimensions and profile as its predecessors, with the 13-inch model weighing about 2.7 pounds and having a thickness of under 0.5 inches[3][9].
However, there are a few aesthetic updates with the M4 model. It introduces a new color option, Sky Blue, which joins the existing colors: Midnight, Starlight, and Silver. This new color replaces the Space Gray option that was available in previous models[1][11]. Additionally, the M4 model includes a 12MP FaceTime camera with Center Stage functionality, which enhances video call experiences by keeping the user's face centered[1][11].
In terms of ports, the MacBook Air M4 now features two Thunderbolt 4 ports, which support driving two external displays simultaneously while the laptop's lid is open, a feature not available in the M2 model[1][2]. This improvement in external display support is a significant functional upgrade, although it does not affect the overall design of the laptop.
Overall, while the core design remains unchanged, the M4 model offers some notable updates in terms of color options and functionality.
Citations:[1] https://www.techradar.com/computing/macbooks/apple-finally-unveils-the-macbook-air-with-the-m4-chip-but-the-best-news-is-the-new-price
[2] https://9to5mac.com/2025/03/03/apples-m4-macbook-air-coming-this-week-with-these-six-features/
[3] https://9to5mac.com/2025/03/05/m4-macbook-air-vs-m1-macbook-air-upgrades-in-every-category/
[4] https://mashable.com/comparison/apple-mac-mini-m4-vs-mac-mini-m2
[5] https://www.tomsguide.com/features/apple-macbook-hierarchy-m3-vs-m2-vs-m1-benchmarks
[6] https://www.goodhousekeeping.com/uk/product-reviews/tech/a62828298/apple-m4-macbook-pro-review/
[7] https://www.wired.com/story/apple-new-13-inch-and-15-inch-macbook-air-m4-chip/
[8] https://www.tomsguide.com/news/live/apple-something-in-the-air-live-updates
[9] https://www.tomsguide.com/computing/macbooks/macbook-air-m4-is-here-with-more-power-12mp-center-stage-camera-and-stunning-new-color-for-usd100-less
[10] https://www.apple.com/newsroom/2024/10/new-macbook-pro-features-m4-family-of-chips-and-apple-intelligence/
[11] https://www.apple.com/newsroom/2025/03/apple-introduces-the-new-macbook-air-with-the-m4-chip-and-a-sky-blue-color/