nV shouldn't cut new SKUs/silicon but cut the prices on the existing mainstream 750/760 (Ti). The press and benchmarks have already told us how great these cards are... now just get the price down to make them irresistible. By releasing a new SKU, most people will wait for reviews to evaluate, wasting precious lead-time and letting AMD get early sales in.
Take 30% off the price now, and bundle a few games and utilities and they will shift like hotcakes.
Its for reasons like this I didn't go Nvidia last time and is the reason I wont go Nvidia this time for being too damn greedy. Its unfortunate for Nvidia am not a fanboy