https://www.techradar.com/news/now-the-iphone-xi-plus-design-gets-revealed-in-the-ios-12-beta

We think we know that Apple is revealing three new iPhones next month, with one of them tipped to be a 6.5-inch iPhone XI Plus model (name to be confirmed). Thanks to some developer digging in the iOS 12 beta code, we might now have some idea what it's going to look like too.

The icon discovered by developer and 9to5Mac contributor Guilherme Rambo doesn't reveal too many surprises, but it does show Apple is sticking to the same design approach that it used for the iPhone X, and apparently confirms a bigger iPhone is on the way.