It partially depends on how well a fan petition does
Do you want the newest Guilty Gear to come to the Wii U? Well, developer Arc System Works isn't sure if they can justify it, so they're encouraging their fans to sign a petition asking for a Wii U version.
Well, we complain about the "chicken and egg" Wii U and third party issue all the time, but this is your chance to put up and support them directly on the Wii U. This isn't a small-time petition with just a few signatures, likely to go unnoticed by a major publisher. This is an officially sanctioned poll that could very well influence the development of a game on the Wii U.
So if you want it, let Arc System Works know. I just signed it -- the more console versions, the merrier!