I think the OP is referring to the new FP+ system that is currently in the testing phase. With the FP+, you have only 4 rides you can reserve in advance at 1 park per day. If you have been selected for the FP+ trial, you can still use the normal FP also.
But word is once FP+ goes live, if you opt to use FP+ you will not be able to use the regular FP.
And there's more word that a little while after FP+ goes live, regular FP will be no more.
There has been nothing official from Disney as to exaclty how FP+ will be rolled out, but if you are interested in finding out more there are at least 4 threads about it over on the Theme Park Attractions and Strategies board.