on monday you will get to see Nvidia launch GTX 660 at USD 300. good for the mid range segment as the new competition will reduce pricing on HD 7870 to USD 300 or lower and push HD 7850 below USD 250. so good for people looking to buy USD 200 - 300 cards.
Monday came and went, with no 660 news. If this is really going to wait till Q3 or even Q4 it may be beneficial to just sit on what you have right now and see if Nvidia lowers the price on the other kepler cards when they release the GK110 Geforce in Q1 2013.