to transfer servers for free and step two was incentivizing those moves, then step three in BioWare's plan to consolidate the community is closing the door on the source servers in preparation for an inevitable merge.
The studio announced that as of today, several of Star Wars: The Old Republic servers have been locked. Locked servers are still playable, and inhabitants can create new toons; however, no new players can roll a character there. These source servers will eventually be merged with destination servers this summer.
BioWare's move to merge SWTOR's numerous servers follows a post-launch drop in subscriber numbers. Players on source servers are encouraged to manually transfer to destination servers before the game does it for them.
[Thanks to Paul for the tip!]