Somewhat surprised no one has started a thread on this. Over the weekend, these pet spoilers were posted on the GOW facebook page,
From the image above, we will get a new tab in the Troops & Teams to mange our pets. It appears that there will be at least 8 pets, one of which is Lucky the Cat.
There will be a new game mode in 3.4 know as pet rescue. This new mode appears to be guild based and has a 1 hr timer.