The new expected upgrades like the M4 Chip is very minimal over the current M1 chip, with even the design style sustained. The new Macbook will remain 14 inch and will have similar core structure as the new M4 iPad Pro. The chip improvement is said to increase super core performance. What appears to be the most noticeable alteration would be the increased starting memory of 8GB to 16GB which is, quite frankly, about flipping time.