A new leak suggests that the material that is used in the next Pro iPhones will be a significant departure from recent years.

Apple is shifting more iPhone production to India ahead of next month’s iPhone 17 launch, Bloomberg reports. The company will build all four iPhone 17 models there, and for the first time US-bound shipments for the entire lineup will come from India at launch.

The most widely discussed rumor is that Apple might be introducing its slimmest phone ever, the iPhone Air, which may replace the iPhone Plus. This rumored device is said to have a profile thickness of 5.5 mm, making it about 0.08 inches thinner than current iPhones. It’ll also feature a 6.6-inch screen.