The problem with the top secret NDA thing is that it's how Nintendo did things to this point though. It was like this for Blops 2, for EA Sports, for Sonic Racing 2, for NFSMW, for Epic Mickey 2, for WO3, for F1 Race Stars, for 007 Legends and tons of other examples. It's probably going to be the case again for stuff like Tomb Raider and Blacklist too. It's a terrible strategy yes, and yeah it may be more about veiling what they didn't get than what they did, but it's been backfiring at virtually every step.
We've been down this road before though, and it very well could turn out the same with expected support failing to materialize. Vita was generally given the benefit of the doubt until the following E3/GC/TGS though, while Wii U isn't yet a month old.