Anandtech was stupid in calling it that early. ARMv9 was only announced in March. Going off the timeline Apple had for v8 (A7 was the first v8 chip) it took 2 years to implement. That's why I doubt M2 would have it unless Apple is going to milk the M1 for two years instead of one. That's something I had not considered.At this point nobody can make accurate predictions about ARM v9. Anandtech were even expecting ARM v9 in the A14 last year....
It may be A15 or A16, regardless I don't expect any Air 5 this year... (only iPad 9 with A12 and maybe a new mini).
The Air will more likely skip again a generation and move to A16 and at that point Arm V9 is pretty much a given. My guess is that M2 will be v9 too. I don't expect any M2 macs in 2021. More like Spring 2022 at the earliest.
And M2 will power all base Macs and the next gen iPad pro in 2022 (which at this point might not come until after the summer) with a jump that should be similar to the move from A12X/Z (let's call it M0, after all it powered the first Apple Silicon Mac for developers ? ) to M1.
Otherwise I pretty much agree. I wonder what changes we're going to see in the 9th Gen iPad. I'm almost positive it will keep the A12, so what other features will Apple bring? Laminated display maybe? 10.5" display?