Apple will likely announce iOS 13 during the upcoming WWDC developer conference in June, among other things. The new version of the mobile operating system is sure to bring a lot of new features, and for that, the devices will also need the right hardware alongside the hardware.
According to an unspecified Apple employee, the manufacturer should no longer offer iOS 13 for all devices currently running on iOS 12. Specifically, the iPhone 5s, iPhone 6, iPhone 6 Plus and iPhone SE models are no longer the new version. In addition, the iPad Mini 2 and iPad Air are no longer shipped with iOS 13. This would make owners of these older iOS 12 devices receive the latest major update.
That Apple will take this step at some point, should be predicted. After all, the models have been on the market for some time and, especially in the area of processor performance, a lot has happened in recent years. However, the information should also be appreciated with the necessary caution, because after all, these have not been officially confirmed by Apple. This will probably happen with the official introduction of iOS 13, at a minimum. Finally, it will also depend on the innovation that Apple incorporates into iOS 13.