iPhone 18 series is expected to be unveiled in late 2026. As part of the series, the Cupertino tech giant could launch a foldable phone. However, the company is reportedly also working on an iPhone variant with an 18.8-inch foldable display, whose mass production has been delayed, potentially postponing its launch too.iPhone 18 series is expected to be unveiled in late 2026. As part of the series, the Cupertino tech giant could launch a foldable phone. However, the company is reportedly also working on an iPhone variant with an 18.8-inch foldable display, whose mass production has been delayed, potentially postponing its launch too.