Due to Haswell's new low power states there is a fear that current generation PSUs cannot provide low power that is stable enough for the CPU to use. That could potentially cause instability resulting in BSOD I suppose.
Since Corsair PSUs are manufactured by either Seasonic or Channel Well (CWT), I would say that you should not worry. Especially if it is a Seasonic model. I think it may be PSUs of average quality and below which may run into issues with Haswell.