Well here is a up to date list via the official Disney Travel Agent site!
Magic Kingdom® Park
- Plaza Ice Cream Parlor - 01/04/12 - 03/27/12
- Dumbo the Flying Elephant - 01/09/12 - 03/30/12 (this has been opened during the soft opening happening now!
- Big Thunder Mountain Railroad - 01/09/12 - 05/27/12
- Liberty Square Riverboat - 04/16/12 - 05/20/12
- Tutto Italia Ristorante - 01/08/12 - 04/27/12
- Innoventions: House of Innoventions exhibit - 12/04/11 - Late April 2012
- Test Track - TBD - rumor is sometime in April and reopening mid to late September. These dates are only rumors though as nothing has been officially announced by Disney since January and upon a call to Disney I was told it will be closing, but no dates are known as of now. (call placed on 3/29/12)
Disney's Hollywood Studios®
- Sounds Dangerous - Closed; Operates Seasonally
- Lights! Motors! Action! Extreme Stunt Show - 04/29/12 - 05/02/12