I've started to get various bits of information that are all pointing to the much-loved Lights of Winter not being performed this year at Epcot. This isn't yet confirmed, but there is no mention yet of the Lights of Winter in any of the WDW holiday marketing materials, nor are the arches in their usual staging area in the Epcot parking lot (they are typically located here for a few weeks prior to be installed in the park).
The Lights of Winter at Epcot is a canopy archway of 30,000 lights, running along the walkway from Future World to the World Showcase Plaza. Each night during Epcot's Holidays Around the World holiday season, the archway creates a spectacle of synchronised dancing lights, combined with the Fountain of Nations, all orchestrated to holiday music.
We have a discussion thread on the forum at http://forums.wdwmagic.com/showthread.php?t=512090
if you have any more information or would like to comment.