Star Wars: The Old Republic may eventually become free-to-play. Emmanuel Lusinchi, the lead designer of SW:TOR has stated:
“The MMO market is very dynamic and we need to be dynamic as well. Unless people are happy with what they have, they are constantly demanding updates, new modes and situations. So 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.”
Obviously this does not guarantee anything, but SW:TOR becoming free-to-play is an exciting possibility.