The iPhone 11 Pro and 11 Pro Max are sequels to the iPhone XS and iPhone XS Max - if there was any doubt. They are just as big, with similar designs and screens, but come with improved performance, some big camera upgrades, larger batteries, and a new Apple U1 wideband chip. Indeed, there is a lot to explore, so don't let the familiar looks fool you.
A new chipset with an extra couple of processor cores and the first in-house GPU, an all-glass body, a superior camera. Any other year, those sorts of things would've made a perfectly acceptable S upgrade. You know what we mean, we've all been there. Apple tells everyone it's hard to believe how much has changed.