It seems you're envisioning a hypothetical future iteration of the iPhone, possibly named the "iPhone 15 Pro Max" with a storage capacity of 256GB and a color option of "Blue Titanium." While there hasn't been an iPhone 15 released as of my last update in January 2022, Apple typically releases new iPhone models on an annual basis, so it's conceivable that an iPhone 15 could be introduced in the future.
Your description suggests a premium variant of the iPhone, likely featuring a large storage capacity and a unique color option. "Blue Titanium" sounds like an intriguing color choice, hinting at a sophisticated and modern aesthetic. However, without official confirmation from Apple, these details remain speculative.