Not sure if they covered this but what is the difference between all the different models with regards to the M1 chip. Are they clocked differently?
I assume not as the a series are all identical and the only differentiator is the X version in the iPad pros as far as I know.
Edit: Just found out.
Basically, the low end air has only 7 cores instead of 8 (binning the lower quality processors) and will likely suffer a bit from thermal throttling. The next model up air doesn't have this however. The air has a smaller battery, less bright screen, no cooling fan and no touchbar. Beyond that, they are all identical.