Apple really made HiDPI displays take off when it first introduced Retina displays, but while the company is strong on things like color accuracy, competing products now offer much higher resolutions. It's a 13.3-inch IPS panel with a native resolution of 2,560 by 1,600 pixels. The Air has the same Retina display as before. You can go up to 512GB for another $200, 1TB for another $400, or a beefy 2TB for an extra $800.
128GB was pretty tight even for light users, but 256GB is just right for those using this as a basic productivity computer. Apple has been doubling storage across its MacBook line, and that's very welcome.
Storage starts at 256GB in the base config, up from 128GB in past Airs. In standard configurations, the Air comes with 8GB of 3733MHz LPDDR4X memory, but you can opt to upgrade to 16GB for an additional $200-which I'd recommend for a lot of people, especially if they use a bunch of non-Apple apps like, say, Google Chrome. For graphics, you're looking at Intel Iris Pro graphics matching whatever CPU you pick.