apple?
Where is their first party division? they have enough on their hands
sega?
already learned their lesson....
First of all there already is a fourth console: leapfrog, but it is a toy, or, aren't they all toys wtf. there is no difference between the consoles, i mean toys.
Secondly, someone who is going to make a console, is one that has its hands in the livingroom and wants to expand. If anything it would be a tv company, although a huge company valve might go in on a venture with some company.