Looks like our prediction was right after all!
http://www.nintendoworldreport.com/news/28933
Gaijin Games is indeed in posession of Wii U development kit and the studio is wondering about bringing their upcoming game to the platform. This comes from a Q&A video on the official blog of Runner2.
In response to a question asked by a fan, the CEO and Runner2's co-director Alex Neuse says: "We can't confirm anything. I will say that while we were playing with our Wii U the other day, we all thought: Ooh, I wonder if we should bring Runner2 to the Wii U."
You can watch the full video here below to learn all sorts of new details on the project.