彭博社記者馬克·古爾曼（Mark Gurman）近日在X平台發文指出，知名配件廠商OtterBox已推出適用於蘋果iPhone 18 Pro的手機殼，並率先在百思買（Best Buy）上架銷售，這一反常的「超前」動作引發了業界對iPhone 18系列設計定型的關注。
Otterbox seems to think the iPhone 18 Pro will be able to fit inside of iPhone 17 Pro cases and vice versa. Also, Best Buy is already putting these on shelves. A little early.
古爾曼在推文中強調：「從OtterBox新殼來看，iPhone 18 Pro能兼容現有iPhone 17 Pro的手機殼，反之亦然。百思買現在就開始賣這些殼，確實有點早。」這一細節暗示iPhone 18 Pro在機身尺寸與開孔布局上將與17 Pro保持一致。網友據此推測，iPhone 18 Pro大概率不會搭載此前傳聞的「可變光圈」技術，該硬體升級或將繼續由iPhone 18 Pro Max獨占。
結合此前曝光的2nm A20 Pro晶片、靈動島面積縮小35%、深櫻桃紅新配色以及自研C2基帶等升級資訊，種種跡象表明，今年iPhone Pro與Pro Max雙機型之間的硬體鴻溝，可能是近年來最大的一次。
This means zero camera upgrades, at all, for the 18 Pro. Same exact main, ultrawide, tele, and front. Noting that the main has been the same sensor and lens since the 14 Pro, aside from the process improvement that allowed 4k120fps readout speeds.
