This is the iPhone 15 Pro in Titan Gray, the colorway that will replace gold
Apple's upcoming iPhone 15 Pro will be unveiled at a special event next month, that's rumored to be happening on September 12. The date itself should become official next week. Unlike its predecessor, which used stainless steel for the frame, the iPhone 15 Pro (and the Pro Max alongside it) are rumored to swap that for a titanium frame.
This apparently influences the colorways that the company can offer, and thus gold and purple will be out, to be replaced by Titan Gray and a dark blue, respectively. The image below is a render of what the new Titan Gray hue is expected to look like:
Keep in mind that the name isn't final, but Titan Gray is said to be the working title used by Apple throughout the development process. As you can see, Titan Gray will be darker than silver or white and lighter than Space Black or graphite.
A dark blue finish will replace purple in Apple's new Pro smartphone lineup. The iPhone 15 and iPhone 15 Plus are expected to launch in black, green, blue, yellow, and pink.