The wiiU distribution is different then any console before.
They stopped with the biweekly shipments and do two a week. Thats why they are not sold out.
They also like with the wii and unlike with microsoft and sony make a profit off each console. To break even for them is far easier.
You needed to buy at least 5 extra games for microsoft/sony to make a profit off of your console. Nintendo, none. And the wiiU owners have bought more game per capita then the wii did at this time, then the 360 did or the ps3.
They have the third party support, what they DONT have is the media support that sony and microsoft have. The console itself while yes is weaker then the xbox one and ps4 is still more powerful then previous gen, and due to the fact that both the ps4 and one are using very similar gpu archetcure ports are easier then ever.

That is also not how vaporware works. The design of the box does nothing for hype or whether or not your going to purchase one. Sony knows that. Its also not something that needs designing until near release anyways. Hell when the 360 was first announced it had no box to look at. All you had were the devkits that were built out of Macs.