Nintendo is sitting on top of the world right now. The Nintendo Wii was a huge success with the casual market, the Nintendo DS was a huge success with the casual market, and now their sitting high on mountains of money.
Enter today. The Wii sales have dropped hard, and Nintendo is not going to let their momentum drop. It's almost time for a successor to the Wii. But will it be aimed for the casual audience like the Wii was. My guess is, A big kind of. I think Nintendo is going to try and play catch up to Microsoft and Sony, but at the same time stay a generation behind them. Looks at the 3DS it's a handheld and it's almost as powerful as their current console, so we can expect Nintendo's next console to be a bigger jump that what the Gamecube to Wii was.
CPU: Nintendo will finally break into the realm of the Ghz. Their CPU will probably be Power PC based just like the WIi and Gamecube. While their next console will be more powerful I don't expect them to spend big money so I'm playing it safe and saying Nintendo would use a custom Tri Core CPU or Quad Core CPU between 2.5 Ghz and 3.2 Ghz.
Price: $50 - $75
GPU: Nintendo will take another leap here and get a custom designed ATI graphics card sporting 512MB of dedicated RAM.
RAM: Nintendo would probably want to use more RAM, but they're not going to over do it. Again playing it safe 1GB of DDR3 RAM.
Storage: I think Nintendo has no choice, but to adopt Blu Ray so that they don't run into the same problem MS ran into this gen. The funny thing about it is that the disc drive will be one of if not the most expensive parts of the entire console.
HDD: For the first time there will be a HDD available. I'm not expecting a huge amount of space, so maybe 120GB at the most.
Everything Else: This is the same as Microsoft's the final items, such as the case, motherboard, A&V output etc. We know Nintendo is cheap cheap cheap when it comes to this, but I think they may try a little harder this time.
Overall: So this is a huge leap up from the Wii, but still far behind what I expect from the other two console developers. Nintendo's next console will be on par or slightly more powerful than the current Xbox 360 and PS3. Which is more than any Nintendo fan can ask for.
CPU: Power PC 3.2 Ghz Triple Core CPU / Power PC 3.2 Ghz Quad Core CPU
GPU: Custom ATI 1GB GPU
RAM: 1GB of DDR3 1333 RAM
HDD: 120GB HDD @ 7200
Rest:1080p, 3D display, 7.1 Dolby, etc...
$75 + $50 + $20 + $60 + $30 + $100 = $335
Wholesale prices on buying large quantities is generally around 20% off, so include that and the next Nintendo console should cost: $268 and that's if they use the maximum specs.
So expect the next Nintendo system to launch at $250 just like the Wii or at the most $299.