"Ever heard of kosher pork"
Yes actually, but it does not exist now. Pork was kosher for a period of time, temporarily when the Jews entered Israel, Prophets allowed it for a short period of time ( note- a Prophet can say for a small period of time, not to follow a commandment, but never to get ride of a commandment). Also it says that in the future the pig will be kosher. The question is asked will the Torah change? NO, but it will be the nature of the pig that will change and it will Chew its cud and still have splitt hoves.