I've been running a Minecraft Pocket Edition Realms server for my daughter and her cousins, and we're using this update. It's good. The water positively teems with life now. It's actually maybe a bit overdone. We have a small lake near the village that has half a dozen dolphins, some turtles and a load of fish in it. I managed to breed some turtles, too.
I have a wicked trident, and I found treasure map in a sunken ship.
Also boats seem a lot better. Not sure if that happened in this update or not.