USAF CV-22, DOD photo
The Air Force Times is reporting the Air Force is considering using the V-22 Osprey for SAR, at least Combat SAR. They see these platforms as having an advantage where speed is critical. They also recognize that in other circumstances, agility may be more important, so they are not considering wholesale replacement of helicopters with these relatively large aircraft. The planned purchase of 112 HH-60W next-generation Black Hawk helicopters is still expected to go ahead.
It may be worth noting the Marines are already using their MV-22 for combat SAR.
In the not to distant future, we may have aircraft that combine the agility of the H-60 with the speed of the V-22.