It would seem that BioWare is considering taking Star Wars: The Old Republic into the Free to Play realm. According to Emmanuel Lusinchi, Lead Designer at BioWare, the studio is investigating said possibilities and stated "We are looking at free-to-play, but I can't tell you in much detail. We have to be flexible and adapt to what is going on."
It makes perfect sense for BioWare to consider this model for SWTOR. The F2P market is getting bigger and better; so if gamers are given the option of playing something both fun and free -- most likely they'll opt for that compared to a subscription based model.
Personally I'd love for them to go F2P. It would give me the ability to play whenever without having to feel like I wasted money by not playing with the month.
We'll have to wait and see what BioWare decides for the future SWTOR.