Otterbox is already selling iPhone 18 Pro cases, remarkably early for a device not expected until September. Crucially, the case packaging suggests iPhone 18 Pro and iPhone 17 Pro models share identical dimensions. While most of the iPhone 18 Pro lineup is expected to maintain the iPhone 17 Pro's design, rumors suggest the iPhone 18 Pro Max may be slightly thicker and heavier due to a larger battery. This early product availability hints at design continuity between the generations.