I suspect they'll just add new songs to the Latin and/or Latin Pop stations. And maybe to the Romance station as well. It seems the most logical choice given the new world and the theme of the pack.
I thought Latin and Latin pop came with Jungle Adventure, rather than being base game, but I could be wrong. If I'm not, maybe they'll move them to Base Game, which would be cool.
I think it's only Latin Pop that comes with Jungle Adventure. I'm pretty sure they've moved stations to base game before, and still had pack exclusive songs on them - which doesn't really take anything away from the people who bought the pack.
