I'll summarize some of the major points for the lazy folks (yes i know you're out there lurking).
CPU: IBM Power®-based multi-core microprocessor. IBM has said that the chip will be based on the same one used in the Watson supercomputer (the one that was on Jeopardy). This will be roughly 50% more powerful than the PS3.
GPU (No idea what this is tbh): AMD Radeon-based High Definition GPU. Based on RV770 architecture. Supports DirectX 10.1.
Game Discs: 12-centimeter proprietary optical discs, each holds 25 Gigabytes (equivalent of a single layered blu-ray disc). Also supports Wii Optical Discs.
Resolutions supported: 1080p, 1080i, 720p, 480p, 480i"
Andy, I have only one thing to say to you for your comment "Three-fourths of your players are stuck with the old controllers? Yes, if you’re playing group games, but most of the time you’ll be playing single-player games," AMEN!! In all honesty, most players are not going to be playing party games non-stop with friends/family, multiplayer games are just a piece of the pie, whereas Single Player games contribute significantly more.
The article mentions that the only 2 succesful games to bridge the gap between casual and hardcore were Mario Kart Wii and New Super Mario Bros. Wii. I for one, certainly think there's another game in there that's been left out: Super Smash Brothers Brawl. Brawl was pretty much an instant success when released, and has succeeded in snagging a LOT of players, both casual and hardcore.
I've also read that a lot of people are thinking that when Microsoft and Sony announce their next consoles, Nintendo will be left in the dust, while that's a legitimate thing to worry about normally, it's not something to worry about with Wii U. Based on what we know of the hardware running the Wii U, its safe to say that unless Microsoft and Sony introduce something so completely mind-bogglingly amazing as their next consoles, Wii U will still be in the running. One of the ideas behind it is to enable it to compete with whatever Sony and Microsoft throw into the ring as well, and still have a GOOD chance.
Also concerns over the Tablet controller...I direct your attention to exhibit A: the controller for the N64; first controller to incorporate the control stick we're now familiar with. Control stick in the center, D Pad to the left, A and B buttons slightly to the right of the control stick, and then on the right we have the C Buttons. How to hold it? I hold it with my left hand on the center area, and my right hand holding the right handle. Easy to understand.
Exhibit B: The Game Cube controller. Evolved from the N64 controller. D-Pad is now located below the Control stick, which is STILL your primary means of control in games.
The Wii U Tablet, essentially looks like a combination of the GameCube controller and the 3DS and Wiimote. 2 Control sticks (GC idea), Home button at the bottom of the controller (3DS and Wiimote), ABXY buttons (3DS and DS). I can go on if you like.
Its WAY too early to start the hate flowing on the Wii U since we've only seen DEMO versions of it (in all honesty, do you really think that what you saw at E3 is 100% final? because if you do, please do wake up from your dream)"

Ok so lets review here, E3 was as of today, 2 months ago. It's currently August, and there are still another 4 months left in the year.
so now to address each of your concerns Andy:
4. There aren't any launch titles announced right now...BECAUSE THE SYSTEM IS STILL IN DEVELOPMENT and was only ANNOUNCED 2 months ago, to hopefully be launched in 2012 (probably around Christmas time so its out for holiday shopping)
5. umm nobody's selling it because there's NO RELEASE DATE, nor has Nintendo even announced a PRICE for the system! Do you expect Amazon, BestBuy, and Gamestop to sell you something that has no price, no release date yet, and was just announced barely 2 months ago?
Actually ya know what Andy, sure I'll sell you a Wii U for $150. You send me the money, i'll send you the system when it comes out.
6. Really? no ads about the wii u? not even billboards? *le gasp* That is completely surprising even though the system has no release date, price, and isn't expected to go on sale until 2012!! (if you can't see the sarcasm, now you know)
seriously.............."