This is what I found out:
1) You have to train pet battles and you have to train Wild pet tracking. I found a trainer in the Goblin Sums of Orgrimmar, others report they are in starting areas like Razor Hill and Goldshire. He only offered these two trainings, nothing else.
2) Before beta build 15640, I had copied over my hunter who is my main companion collector (170ish). All pets were available in the previous pet journal. After patch, none of the pets showed up. I had to recopy my hunter, and then all the pets I have showed up.
3) The "Find Battle" button on the pet journal caused a crash. (Or maybe just being in Org does. I havent crashed since being out of Org).
4) You can summon and dismiss a pet while mounted on the ground (not sure if intended).
5) When you find a wild critter that (I assume) is battleable, you mouse cursor turns into a yellow paw icon. Could not screencap cuz PrintScreen function does not cap the mouse cursor and I had no third party screen cap software.
6) When I click the critter, nothing happens, but I get text that says "Pet battle already in progress" and "Invalid pet-battle team." I checked out my pet journal and the pet battle slots are locked, I am not sure how to unlock it. Dragging pets over to it doesnt work.
7) I can no longer attack and kill wild pet critters.
8) Right clicking pets in the journal gives a plethora of options.
Set Favorite: Not sure what it does, probably just a filter.
Release: It's gone! Not sure why you would want to do this lol but it is there
Put in cage: This one is curious. If you put it in cage, you lose it from the journal, but a cage gets put in your bag. You can vendor it AND put it on AH. Cages on AH just say "a unique pet" so people have no idea what they are lol.
