iPad Pro got it in spring 2021, so an M2 refresh seems likely too. October event along with an M2 MacBook Pro refresh? Or maybe not until spring 2023.

Another comment mentions RAM capabilities. Unfortunately that’s tied to the storage tiers instead of being something you can pick separately, so if you want 16 GB of RAM you have to buy the 1 TB or 2 TB models. Meaning for a 12.9” iPad Pro, if you want 16 GB you’re looking at an $1800 tablet. Not ideal.

RAM might hold it back?

Still, probably not too hard to build for iPad or iOS.

The ipad pro has a 16gb option. It's essentially the same hardware as the macbook.