Ghost Recon Online was announced for the Wii U but it wasn’t shown at E3 2012. This made people wonder if something had happened to it. But fear not! Ubisoft has confirmed that, while the PC version is the priority, the Wii U version is still on its way. It will arrive after the PC version. This is because:
The team is taking a little bit longer than they thought they would to get Ghost Recon Online to the level and quality that they want and that definitely has had an impact on how much time they’re able to spend on the Wii U version because we want to make sure we get it right.
And I think that’s pretty much the best reason possible for a delay.