Starting with Walt Disney World, the exterior of Epcot's Mission Space is nearing completion. Also, a "Mission Space Launch Center" has been set up in Innoventions.
The ride portion of Epcot's Living Seas has been closed. It is rumored that the ride system has been completely ripped out.
Over at Disney's MGM Studios, Tower of Terror is currently being retrofitted with safety belts that will replace the lap bars.
There is some land clearing over at Sea World Orlando in one of the corners of the park. The waterfront is expected to be built near the middle of the park, so the clearing could be for something else.
And finally, construction at Wild Adventures is currently underway for the mini-golf complex and arcade.
Link: America Coasters Network