The Star Wars: The Old Republic Website offers details on server consolidation in the Star Wars MMORPG, including a Server Consolidation FAQ (thanks VG247). They explain this follows "the success" of their Free Character Transfer Program:

Following the success of the Free Character Transfer Program, and after closely monitoring server populations, we have now taken the next step in our on-going server population balancing process. We have upgraded destination servers in order to support a significantly higher number of players. As of tomorrow, all characters on origin servers will be automatically moved onto the upgraded high population destination servers. By centralizing our player populations on these higher population destination servers, we feel that we can offer our players the best possible Star Wars™: The Old Republic™ experience.