According to Senior Producer Dallas Dickinson, the service will be made available in waves. The studio will begin by offering free transfers to and from specific servers, but later on there will be a more widespread system that will allow anyone to transfer to the server of their choice. The service should help alleviate issues with low population servers by offering transfers to high-pop ones.
It's important to note that while some of these transfers will be free, others will require a real-world fee.
SWTOR recently released in new territories including the Middle East and has plans for additional playable races for later this year.