with the major possibility that the Xbox will finally move to blu-ray, will that be enough to see the adoption on the PC? Also will the Wii 2 do this? And if so, would that speed up the process?
I am really interested in seeing what happens with the Wii 2. There's a few problems though. First most wii games do not fill up even a single layered DVD. There are only a handful that come on a Dual layered DVD any I don't believe that any of them even come close to filling it up. (I'm completely making this last part up so someone please correct me if you know different!)
So they really probably could get away with DVD's again unfortunately.
The other problem is that Wii games rarely get ported over to anything else because of its unique controls. The Wii 2 is rumored to come with an LCD in the controller which could make game elements non trivial to port or cross develop with the Wii 2.
They haven't begunto hire to a new system design team yet, that's usually how allot of websites estimate a release date.
All 3 companies have been working on their next generation platform before they even launched their last ones. You can be sure that if needed they could have something to launch at the end of this year, of course they would prefer to wait. The Platstation series has always launched 6 years apart (94, 00, 06) I wouldn't be surprised if they were aiming for 6 years once again.
Really though we are less than a month away from seeing what happens with the Wii 2 at E3 this year so fingers crossed that it brings us the Next Generation!
If it doesn't then... uhoh Nintendo could be in trouble. The concept of 'Exclusive' games is going to go away soon in my opinion. It's just not feasible to spend all of this money on 1/5 of the market. The Wii had a metric crap ton of exclusives simply because it was not feasible to cross develop for it due to its graphical capabilities. The number of Wii titles that actually made good money is rather slim once you exclude Nintendo published games and I'm not sure that the publishers are willing to go down that route again. Cross developing is extremely attractive though.