Do you really think that Sony will be able to keep it at console price points? I'll believe it when I see it. I'm willing to bet that we will also see an increase in console pricing.
It's not beyond the realm of possibility that the Neo could be introduced at current console price points. The new gpu will be using ATI's new 14nm FinFET tech, down from 28nm in the current PS4 gpu. That'll make production costs cheaper for each gpu, even with a probable increase in transistor count and percentage failed QA. I really wouldn't be surprised if ATI will sell the gpu at a cheaper cost to Sony than current prices.
Never mind further cost reduction because the new parts will draw less power, so thermal dispersion and power supply costs can be lowered, thermal design of the new system need not be as stringent as well.
I believe that Sony have found themselves in the strange position of being able to lower hardware costs by increasing performance. Their quandary was, do they artificially limit the power of the new systems, or do they provide a two-tier console performance structure for this generation? Looks like they've gone for the second option.
Of course, they'll likely sell the Neo at an increased price, but I think they'll start off at the original PS4 price point. Eventually, they'll run out stock of older PS4 units, and then move the Neo price down to the current level.