I'm waiting for it too, I want to see how they're going to scale (more processors? faster processors?) as some of the design decisions could be arbitrary or actually inherent (can they make an M2 with more PCI lanes?).
I think this is the more interesting stuff. We know how the trajectory looks from the A-series chips that have rolled out over the last decade. What's currently a concern is if this sort of design can compete with Xeons or Threadrippers, or if it can power multiple displays or have a multitude of USB4 ports. The M1 is great but it's really only great for these entry level devices they've put them in so far.
