Most of the flights affected will be those that weren't "popular", ones that usually went out with a flight load of 50% or less 50% of the time. What will happen is that they are going to add more "feeder" flights to bring the people in from the smaller cities to the hubs. In fact they have already tripled the amount of express flights in Pittsburgh,(they took one of the jet concourses and now it services the express aircraft) and doubled the amount of express flights in charlotte to bring them in from these cities to then get on the bigger jets to take them to their destinations. (I hope you understood what I was trying to say) If you fly out of a "hub" city to begin with, then you shouldn't be affected too much.
Cali you should be fine on your flights!