Computerworld - https://www.computerworld.com/article/3284926/mobile-wireless/apples-ios-12-public-beta-is-available-now-first-thoughts.html#tk.rss_all
Just weeks since announcing it, Apple has already shipped its first iOS 12 Public Beta. Any iPhone user can sign up for the beta. I thought I’d drop a few first impressions.
An upgrade older iPhones will thank you for
iOS 12 is looking good for owners of older (iPhone 5s and later) devices. Apple has met its promise of performance improvements when running the operating system on older devices. This is significant and means if you need to get an extra year or two out of the iPhone you already have, you can expect to with iOS 12.