Retiring to lower cost locations...

I keep seeing articles about how Americans do not have enough funds for retirement. That would imply that some of these people will have to move to lower cost locations for retirement right? Have anyone seen any recent articles that talks about the impact this could have on real estate prices in high cost locations like the NYC area, especially at a time when loans are harder to get and unemployment is at record high (10.3% and still heading higher). I would imagine that many who are near retirement are also being forced to retire early because unemployment is high and it's generally harder for seniors to find jobs. Have any recent studies account for all this?