Third party analysts have examined the A10X Fusion processor found in the new iPad Pro, and it has been confirmed to be the first chip in a device using TMSC's FinFET 10nm chip fabrication process.
According to the report, Apple will end support for the A10X Fusion chip. So, the iPads sporting pre-A10X processors will not be compatible with the upcoming iPadOS 18. Here's the list of iPads ...