Read the article here.
I'm not sure how I feel about this, as I'm not directly affected in terms of not owning a EVGA 680 Classified. There has to be some underlying reason NVIDIA is restricting the modifications to current voltage regulators in their cards.
In hindsight, it takes some of the fun out of overclocking. Knowing you're losing the chance to push your hardware a little further can certainly cause some buyers remorse. I know I feel that way sometimes about my 670s and their limited overclocking potential.