for me gamers don't know what they want, people don't realize that is impossible to satisfy everyone out there and that we need competition between consoles, people say that Nintendo is for kids but they don't get that Nintendo can make a 10 times better machine than the ps3. also the sony haters don't understand that sony can do a also a casual/friendly console. each company offers something different, they make studies, and create a console based on results.

Initially, Epic had no intention of bringing UE3 for android, but they said Android could handle the engine and it was up to developers to develop the games using it:

http://www.droidgamers.com/index.php/game-news/android-game-news/1454-unreal-engine-still-not-supporting-android-officially-doesnt-mean-you-cant-make-games-with-it-though

Then Gameloft started to develop UE3 games for Android.

WiiU is in the same situation: Epic doesn't want to support it, but the system can handle it and if developers want to use it to develop their games there is nothing to stop them. If Ubisoft (example) buys the license they will be able to use the UE4 license to develop for all the three next gen consoles without any problems.

Actually, there is nothing really impressive about this new engine (imo), the most impressive aspect is that it will be much faster to develop your games.

The most impressive engine (again, my opinion) is Cryengine. Looking at the leaked specs, I don't think we will have a big jump (I will give you a link showing that you shouldn't expect another "wii situation"), Epic is hyping everyone just to sell their engine, they know most developers are just creating their on engine now (DICE, Square Enix, Ubisoft etc).

-EDIT-

Here:

http://neogaf.com/forum/showpost.php?p=40674851&postcount=13459

Wii was using very outdated tech at launch and it had no HD resolution. Now, the WiiU will be using updated tech. It won't be as powerful as x720 or PS4 but we won't see another "Wii situation" again. Now we just need third party sales.

The only thing worrying me is the new info about the ram but suppose I can't talk about that here.

specs are enough for me
its up to each individual

specs matter, graphics matter, but I am sure nintendo is trying to convey the message that HD is not an innovation but just a given. The focus is going to be family friendly again + nintendo fans (like me) + anything else they can get.

On the ports part, there are a few of them that I might get, like ninja gaiden or batman. I dont have a ps3 nor 360 and I think I am fine, and hey dont think I am a casual gamer, I have more than 300 games and no backlog at all.  

As for the ports, let people say what they want. PS3 and x360 also had tons of PS2/GC/Xbox1 ports at launch (COD3, Tony Hawk, Need for Speed and some other games), there is only 4 ports on the WiiU (Trine 2, which has improved graphics, new levels and some other aditional content; Ninja Gaiden 3, which is fixing every problem from the original version; Mass Effect 3 and Batman Arkham City) I am sure you will enjoy Arkham City and Ninja Gaiden 3. Arkham City is one of the best games  this gen along with Red Dead Redemption and Xenoblade (imo).

Yes, and people like me who do own an HD console but just haven't bought Batman: AC and would be interested in getting the best version.

To the people complaining about a lack of 8th gen games announced so far for WiiU, you need to remember that there will still be a year of big 7th gen titles coming out that the WiiU should also be focusing on getting. Games like Darksiders 2, Tekken, Madden, Fifa, and especially Assassin's Creed 3 and Black Ops 2 will not be old news upon WiiU's release. Then there's Aliens CM, Bioshock Infinite, Project CARS and many more that will be out next year. It would be foolish for WiiU not to have these 7th gen games in its library when they will be very relevant in the marketplace.

Except for ZombiU and Project P-100 (which are WiiU exclusives), no 8th gen games have been officially announced for any console yet (I'd bet money that we'll see Watchdogs on WiiU), and we already know that WiiU can run UE4 and CryEngine3. The news regarding 8th gen games for WiiU will come in due time.

I think you are understimating 2 important markets. The casual HD market and the "only Wii plus PC".

I have a lot of friends that have a PS3 only because PES 2012 looks better on that console, at the moment someone tells them that it looks just a little better on Wii U (and if the price is right) they will sell their console and buy a new one, because "the grass looks nicer" or "the Wii U is more powerful". Also have friends in the other side of the spectrum, their only console is a Wii (which mostly they combine with an average PC).

The first group does not know anything more than 2 or 3 games TOTAL, they will buy every years version of the same game and if the "best looking" one is in a different plataform they will move if it is not too expensive (600 dollars too much, 400 is a maybe, 300 is very good looking).

The second group will buy the console no matter what, as is the only place to play Nintendo Franchises, and the ports is just convenient as they don't like to struggle too much with their PC versions (constant drivers updates, version delays, compatibility issues, etc).

Article still didn't say who ported the engine over, and as far as Unreal 4 goes, it depends if they keep it open source for the liscensees.  If it's open source, then it can be ported over, but without official support from Epic, it won't be an easy task.  Plus there's a reason why Epic isn't doing it themselves, my hunch is because they probably can't get everything running.  And about the last article, I know the Wii U is going to be a well made machine, I've been saying that this whole thread.  Nintendo is trying to balance power vs cost, which isn't a bad thing.

Information has been skint regarding new Wii U tidbits, just this week we found out the game's cover... You can only predict if they will do one thing or another, but we'll know for sure in the coming months. Somehow it feels like it will begin this month.