Bloomberg’s Mark Gurman has provided some more detail on the next Air refresh. It will be thinner and lighter, the publication reports, have a next-gen M1 processor, and use the same MagSafe charging system bound for the next MacBook Pro refresh. The company is also said to be deliberating a design with smaller screen bezels, which would shrink the already-portable form factor further.

https://www.bloomberg.com/news/articles/2021-01-22/apple-aapl-plans-new-macbook-air-with-magsafe-macbook-pro-with-sd-card-slot

Magsafe and SD slot are very nice. Let cooling and battery life will take another his as managers want to make thing cheaper by making it thinner.

Yet rumors are that new M1 Update, aka M2 will have even more dynamic control, meaning it is not made for long rendering tasks, as it'll drop frequency as much as 3 times during this.