Ayi described it as "PL-16 is AIM-260, but AIM-260 is not PL-16."
Basically, the PL-16 has all the features promised by the AIM-260, and better; it's that simple and straightforward.
Based on the principle of equipping new-generation fighters with new-generation weapons, it will be the standard weapon for sixth-generation fighters, but it will still be compatible with previous-generation fighters, just like fourth-generation fighters carrying the PL-15.
If we turn back the clock 10 years, can't we say that the PL-15 will changed (the standard at the time) modern air combat?