A15 has the same core configuration (2+4) as A14, which suggests to me that they are of similar relative complexity as Firestorm vs. IceStorm, and the new high performance cores aren’t hardware-multithreaded. Which suggests to me that rumors of 8+2 or 10+2 for M1X/m2 are likely not right. Rumors only made sense if the cores were radically different in relative performance - either the low power cores can handle more pipelines or the high power cores can multi thread to compensate for blocking low priority threads. Based on all that, I doubt the 8+2/10+2 rumors. Also means that the new MBPs coming next month may indeed have M1X instead of M2(x).