The iPhone 15 would have a titanium casing with a rounded back similar to the iPhone 5C
According to a reliable leaker, the iPhone 15 will have a titanium case and possibly a rounded rear as opposed to the current models' squared edges.
This might give the upcoming iPhone series a look akin to the iPhone 5C, which had a square-shaped front and a rounded back.
Although not always accurate, ShrimpApplePro does include 6GB RAM for all iPhone 14 models, not just the Pro versions.
Despite the fact that Apple uses the square-edged design language on its MacBook, iPad, and iPhone.
That might be resolved with a square front and rounded rear without drastically changing the design; Apple currently accomplishes this with its MacBook models without sacrificing the slab-sided appearance.