https://wccftech.com/2021-ipad-pro-thicker-because-mini-led-screen/

Though the mini-LED on the new 12.9-inch iPad Pro is said to present a whole new list of benefits that will make creative professionals drool, it will come at a cost. Apparently, the upcoming flagship tablet from Apple will be thicker in size, so let us find out by how much.

MacRumors claims it was sent a series of images from an accessories designer for the 2021 iPad Pro models. For some reason, the pictures cannot be shared, but the dimensions can be and are provided below. In short, the 12.9-inch iPad Pro will be 0.5mm thicker than the 2020 version, likely because of the mini-LED upgrade.