KP mango tree produced nicely this year and i've eaten a few of them.
Positive points: nice coloration, totally stringless, no turpentine flavor, nice size.
Negative points: seed very fat and big, flavor very good, but not excellent, production ok but not heavy. Has taken long time to get into decent production.
It has a very mango mango taste, so it's not going to please those people that like watermelon flavored mangoes or lychee flavored mangoes.
Probably the version of KP we have here is a very early one, not KP176,654.
So yes this is probably not the same mango being raved about in Australia, but one of its early ancestors.