Yes.
You can go to DL's website and look at their calendar to see the refurbs. And here is the list from Mouseplanet's weekly newsletter:
Star Tours closed for refurbishment and addition of elements for Star Tours 2.0. Currently projected to open May 20, 2011.
Astro Orbitor closed for unscheduled refurbishment. Return date unknown.
Roger Rabbit's Car Toon Spin closed through December 16 for refurbishment.
Village Haus Restaurant closed through December 22 for refurbishment.
Mr. Toad's Wild Ride closed December 610 for refurbishment.
Main Street Cone Shop closed December 614 for refurbishment.
Haunted Mansion closed January 313, 2011 for removal of the holiday overlay.
"it's a small world" closed January 1827, 2011 for removal of the holiday overlay.
Horse Drawn Streetcars closed January 18 to February 15, 2011 due to Main Street paving project.
Main Street Vehicles closed January 18 to March 4, 2011 due to Main Street paving project.
Splash Mountain closed January 18 to May 26, 2011 for refurbishment.
King Arthur Carrousel closed January 31 to February 2, 2011 for refurbishment.
20th Century Music Company closed January 18 to February 1, 2011 for refurbishment.
Village Haus Restaurant closed January 411, 2011 for refurbishment.
Bengal Barbecue closed January 614, 2011 for refurbishment.
Hungry Bear Restaurant closed January 18 to March 8, 2011 for refurbishment.
Mark Twain Riverboat closed February 317, 2011 for refurbishment.