Fish are remaining as an item and several more fish are being added as items. They will also be able to be found as mobs spawning in water. I only see this improving star rods and increasing their value (unless the mechanics of fishing are changed altogether).

 

I'm not sure what's going to happen, I just interpret it as meaning that the fish mobs themselves are going to be the only way to obtain fish, but I haven't read into it enough so I can't say for certain.

 

Fish prices will stay the same. Raising the value of something that takes little effort and is easy to automate (and exploit) will not happen in the near future.