EVERYTHING related to the timing of the M2 depends on whether it is
- a SoC based on the A15 (and so, in some sense "late") OR
- a SoC based on the A16 (and so expected to arrive around the September time frame, perhaps a little earlier [doesn't need massive phone volumes], perhaps a little later [at least for now, Apple wants to continue associating the maximum annual SoC drama with the iPhone])
This is what I find weirdest about Gurman (and Kuo), that this is THE most obvious question for a technical person (and even if you're not technical, it informs everything else about timing and capabilities) but they never raise this issue and seem not to care!