The new M4 MacBook Air is a highly recommended upgrade for those still using the Intel MacBook Air.
It offers a significant boost in performance and battery life, with tasks like calculations in Excel or editing video in iMovie being 4.7x and 8x faster, respectively.
The new model also brings back the MagSafe charging and offers a larger edge-to-edge display.
However, if you already have the M2 or M3 model of the MacBook Air, there is no significant breakthrough to justify upgrading.