No, its not the laws that will change G-d forbid, but the nature of the pig. G-d never said dont eat pig, pig is not Kosher because it is not an animal that Chews in Cud, but it does have splitt hoves. The Ben Ish Chai explains that will the Torah be canceled? G-d forbid, BUT what will happen is that the nature of the pig will change, where it will chew its cud (which would then make it a kosher animal). (Also im not exactly sure if everyone agrees if this is something that will change in nature or this is an allegory to something else- for example (what I think) Edom is referred to as "the pig", maybe it has something to do with that. Or both. BUT for sure everyone agrees that no Mitzva will be canceled ever.