An excellent update. Especially remembering that the patch notes always surprise us with additional items (some of which get the community even more excited than the ones that are advertised!) And don't forget that often times something that is introduced in a limited way ends up getting expanded later on.
I'm most excited about the piebald additions, because my play style is to manage the color variations as if they were subspecies (or sub-subspecies), So for me, this means that I get three new animals, confirmed!
I also love that the exhibits are getting so much love. I love the small creatures and tend to manage mine much more closely than a lot of other players seem to (and have gotten quite good/fast at it as a result). So for me these features won't be so much about usability or autopilot, but will rather add a whole new level of strategy and enjoyment to this part of the management game, with different strategies being employed depending on the details of the exhibit species, whether they have color morphs that I'm watching for, which ones need help with their stats, and making sure that I don't end up in a situation with a very old male and a very young female (or vice versa), such that the breeding ends up getting derailed over time.