All I know is that the holiday season is ending after January 6, 2015. So, as of 1/7/15, Haunted Mansion Holiday should be closed, Viva Navidad will have stopped running, Winter Dreams should be over, the Jingle Jangle Jamboree should be closed or getting the décor removed, and the Christmas parade and holiday fireworks should be over.
It's a Small World Holiday will continue on, most likely, through mid-January (not sure of what the end date will be).
As for any other rides going down for refurb or anything else closing, I'm not sure.