From the very beginning it was completely clear what Wii U was going to be, so I'm not surprised at all.
About future third-party support question. Well, Wii U is not even getting current multiplatform games like Metal Gear Solid: Ground Zero, Metal Gear Rising: Revengeance, Grand Theft Auto V or Tomb Raider, so I'm afraid we can anticipate what is going to happen.
For me Wii U will be a box that can only play Nintendo games, I'm fine with this as long as I can buy it at a reasonable price. I find expensive the amount of money Nintendo is asking for right now.