By surprise, Apple has now released the iOS 12.0.1 (builds 16A404 and 16A405; the second is for newly launched devices) for all users.
According to Apple, the update fixes an issue where some iPhone XS devices did not load immediately when connected to a Lightning cable and resolves an issue that could cause new iPhones to join a Wi-Fi network at 2, 4GHz instead of opting for the same network on the 5GHz frequency.
In addition, iOS 12.0.1 restores the “. 123 ”on the iPad keyboard, fixes an issue where subtitles may not appear in some video apps and resolves an issue where Bluetooth could become unavailable.
The update is now available on iOS devices themselves (in Settings »General» Software Update) or iTunes (using a Mac or PC).
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On a related note, Apple also released the macOS Mojave 10.14.1 beta 3 (18B57c) for developers – soon, this new beta should also be painted in the Apple Beta Software Program.
Update Oct 8, 2018 at 14:33
Here are the links for manual download of iOS 12.0.1:
To complete the process, simply download the update package for your device. Then, connect the device to the Mac / PC, open iTunes, go to “Summary” and click the “Check for Update” button while holding the ⌥ key (Option). In the window that will open, navigate to the downloaded file and select it. Then, follow the instructions on the screen, wait a few minutes and you’re done.