M1 is based on the same CPU architecture as the A-series chips so nothing much has changed for the iPad in that respect: the same apps will run, and all of them are 'native'.
Good answers so far. I guess what the OP meant is "which apps will take full advantage of it".
Every productivity app like Procreate or where you export something will do so.
Games and stuff like that will hit the 60 FPS limit way before the CPU or GPU are a bottleneck in any way, at least now.
As of now, No apps are fully optimized for the M1 on iPad Pro. 3rd party apps may have a slight bump with a update after launch, but none that will make you say this 8GB RAM or 16GB RAM was worth it.
Good answers so far. I guess what the OP meant is "which apps will take full advantage of it".
Every productivity app like Procreate or where you export something will do so.
Games and stuff like that will hit the 60 FPS limit way before the CPU or GPU are a bottleneck in any way, at least now.
Note, not every game or app really takes advantage of that now. Very often there's an artificial 60 FPS limiter in place in order to preserve battery life. But of course, when the app supports 120 FPS, the limit is higher.