Specifications
CPU: 1.1GHz Intel Core i3-1000NG4 (dual-core, 4 threads, 4MB cache, up to 3.2GHz)
Graphics: Intel Iris Plus
RAM: 8GB (3,733MHz LPDDR4X)
Screen: 13.3-inch, 2,560 x 1,600 Retina True Tone display (backlit LED, IPS)
Storage: 256GB PCIe SSD
Ports: 2x Thunderbolt 3 (USB-C), 3.5mm headphone jack
Connectivity: 802.11ac Wi-F, Bluetooth 5
Camera: 720p FaceTime HD webcam
Weight: 2.8 pounds (1.29kg)
Size: 11.97 x 8.36 x 0.63 inches (30.41 x 21.24 x 1.61cm; W x D x H)

New Keyboard

The new MacBook Air has gained the same scissor-switch keyboard design seen on the 16in MacBook Pro that launched in November 2019. That keyboard design was itself based on past Mac laptops and the Magic Keyboard that ships with the iMac. Probably the only thing that really matters is that the new keyboard design replaces the butterfly mechanism design used for Apple laptop keyboards since around 2016.

Processor

The 2018 and 2019 MacBook Air models both featured Intel’s 8th Generation dual-core Coffee Lake CPU. For 2020 Apple has jumped to the 10th generation Intel processors and in doing so brought a quad-core processor to the MacBook Air.

Graphics

The 2019 MacBook Air featured the integrated Intel UHD Graphics 617. For 2020 this has been boosted to the Intel Iris Plus Graphics.

These new Iris Plus integrated graphics ship with the 10th generation Intel chips so the improvement is expected.

Apple says that the 2020 MacBook Air offers 80% faster graphics performance.

SSD

It’s great to see a boost to the storage in the MacBook Air from 128GB to 256GB and 512GB, but that’s not the only improvement to the storage offering.

There is now a 2TB SSD  build to order option for an additional.

RAM

Like the 2018/2019 Air the 2020 model also offers up to 16GB RAM (for an additional £200/$200). However, the kind of RAM in the new model is superior.

Previously it shipped with 8GB 2133MHz LPDDR3 memory as standard.

Now the MacBook Air offers 8GB 3733MHz LPDDR4X memory as standard.

Watch unboxing of new MacBook air 2020

Source: zollotech(video), apple (images),techradar(specs)