Talk:Caves/@comment-71.101.103.71-20130609031300/@comment-71.74.73.59-20130609044138

There's no reason to think they will. That would be tantamount to destroying one of our worlds.

Most likely you'll have to either start a new world on your own to see the new cave features, or open a completely unexplored sinkhole in your current world (assuming you still have an unexplored one available).