They've demoed Vita remote play, but I don't know if you are looking for the extra screen of the gamepad or the remote play features of it. Though everyone is sticking second screen stuff into their games, I don't know if they actually replicate what you get on the Wii U (I also hate the "second screen")

I assumed AC3's Gamepad features were carried over.

I have no knowledge of that, but assumed they will. All I was trying to say is that the Vita will give you the remote play, but not the off screen features

There should have been a smiley face following my comment but for whatever reason it didn't show.

Ubisoft's future with the wii u all depend on sales. They have clearly stated this. They pissed a lot of Nintendo fans off when they decided not to do a sequel to Zombie U claiming that the game did not make them any money. Wii U fans disputed this claimed citing that the game sold over 0.5m copies.

Somewhere on the internet in a Nintendo forum there is posted an email or some sort of communication from a massive wii u fan who (allegedly) contacted Ubisoft about their plans for Zombie U reminding them of that fact. Apparently Ubisoft replied that what they meant was that they are no plans for a sequel, that doesn't necessarily mean that there wouldn't be one. Obviously this communication could be fake.

I respect Ubisoft for their efforts in trying to bring as many good games as possible to the wii u but it is now up to the owners to prove that the effort is worth their time by buying these games. Ubisoft admitted that they are now only beginning to get to grips with the wii u and this will be evident in WatchDogs.