The iPhone 15, iPhone 15 Plus, iPhone 15 Pro and iPhone 15 Pro Max get DisplayPort support with the ability to output 4K HDR video

According to Apple's official specs list, all four iPhone 15 models have received DisplayPort support.

Here's What We Know

DisplayPort support was realised in the devices thanks to a new connector - USB-C. With DisplayPort new products can output 4K HDR video to TVs or monitors. This can be done with a USB-C to DisplayPort cable or Apple USB-C Digital AV Multiport adapter. By the way, you can buy it now for $64.99 $69.00, -6%.

For comparison, previous iPhone models could also output to TVs, but using the Lightning port, specifically an adapter and at most 1080p resolution.

Source: Apple