Yes, almost all iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max models purchased from Apple are unlocked. Unlocked iPhones may come with a removable SIM card preinstalled, but they are not bound to a specific wireless network or carrier.
The Apple U1 chip is an ultra-wideband (UWB) radio, which can quickly and accurately locate other U1 devices in the area. The Apple U1 first appeared on the iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max.
The iPhone 11 is equipped with dual 12MP Ultra Wide and Wide cameras. This new camera design will not work with current iPhone XR cases. You will need to purchase a new case for the iPhone 11 with the proper cutouts for the new camera design.
Apple's new iPhone 11 lineup hits the proverbial shelves on September 20th, and if you plan on ordering the iPhone 11, iPhone 11 Pro or iPhone 11 Pro Max you probably want to protect it with a decent case. Even if you don't mind dents and scratches, it's a good idea to keep your iPhone in good condition if for no other reason than to get a better resale or trade-in value for it, especially considering the hefty price tags on these devices.
Yes, all three iPhone 11 models launched in 2019 are rated IP68 under IEC standard 60529. Specifically, Apple has tested each model for splash, dust, and water resistance as follows: