Board Thread:General Discussion/@comment-1940463-20130306130752/@comment-4839682-20130415195437

August Booth wrote: Well, Rumple said in the Sneak Peek that Regina triggered Belle's Lacey memories. Therefore, they will probably change her name to Lacey sometime soon.

Still counting your chickens before they hatch... she's still BELLE, so ABC may not bother to add it, just as they're now doing with the dwarves. Or, she may get her memory restored in Lacey, or otherwise accept that she's Belle, making "Lacey" obsolete.