iOS 12 is supposed to focus on under-the-hood performance optimization plus stability and reliability fixes so it’s not surprising that it will work on the same hardware as iOS 11. What’s notable is that iOS 12 would make iPhone 5s the oldest iPhone model supported by Apple’s mobile software.
If you still use an iPhone passcode that’s only made up by six numbers, you may want to change that and use a longer one because a new cracking tool on the market apparently can guess any six-digit passcode in a matter of hours.
Apple on Monday seeded the second betas of iOS 11.4, tvOS 11.4 and watchOS 4.3.1 to developers. Registered developers can download the new betas through Apple’s dev center, or they can be installed using each platform’s respective OTA updating mechanism.