I'm lazy, but I'll give you my thoughts anyway.
I don't think Sony will bother. With all the cuts elsewhere I can't imagine they will take such a risk as a new handheld in this market.
The handheld market without a competitor to Nintendo will pretty much look like it does now frankly.
Not sure what Nintendo will do. I think they will definitely make another handheld but I think they will have to diversify and/or think of something really innovative, otherwise their hardware sales will decline significantly again next gen as well.







