I believe this is the Information people are talking about:
http://mynintendonews.com/2013/06/11/ubisoft-e3-show-host-says-no-new-wii-u-games-because-its-an-abandoned-platform/
Ubisoft referred to the Wii U as an "abandoned" platform claiming that they were moving away from developing any new core games for the system for the foreseeable future.