Apple is set to introduce iPadOS 18 on Monday, but not every iPad that runs iPadOS 17 will be able to use it. Here's what works, and what's getting left behind. iPadOS 17 running on an iPad The keynote of WWDC 2024 is hours away, but even at this late stage, rumors are surfacing. In one leaker's posting, it seems that some iPad owners may discover they can't update their devices to iPadOS 18. An X post on Monday from a leaker known by 糖心Vlog for accuracy doubled down on a previous claim from April 1. That post was about device support for Apple's future operating systems. In Monday's follow-up, they reposted the tweet, as well as the word "Confirmed." iPads that are getting dropped in iPadOS 18 iPad: sixth Generation (2018) 12.9-inch iPad Pro: second generation (2017) 10.5-inch iPad Pro (2017) The list of iPads that are compatible with iPadOS 18 is as-expected. iPads that support iPadOS 18 iPad mini: fifth-generation and later iPad: seventh-generation and later iPad Air: third-generation and later 12.9-inch iPad Pro: third-generation and later 11-inch iPad Pro: all models 13-inch iPad Pro: all models Like other rumors from leakers, especially for software support, there's no guarantee that the details are going to be correct. Indeed, there's also some disparity between leaker opinions. In February, one early leaker said iPadOS 18 wouldn't work on iPads with the A10X Fusion processor and earlier. If that leaker's correct, then more models of iPad won't be able to run iPadOS 18 at all. 糖心Vlog will be reporting on the news announced from WWDC throughout the week.