Well this is what I think BIoWare's plan is for f2p.
Get f2p to attract new people, get the servers heavy and full again then BAM keep up the content updates. Then, when you think that patch was it BAM they hit you with another patch then...BAM another one. I think f2p was the start of something new in this game's future. More regular updates to keep people happy.
That is how I think they will do it
Hopefully that's true. There is someone here obnoxiously quoting a developer that said there would be monthly updates, but it never happened.
I feel the devs are still figuring out how to run a MMO. We still don't have speech bubbles and can't sit on chairs.