
Sorry I can't help on 2008, but this past January (2009) they had the 4/3. Here's what the Disney info said about it:
(*Of course
THIS IS NOW EXPIRED, so nobody get excited

*)
Walt Disney World Buy 4, Get 3 Free deal!
From now through December 20,2008, if you book a four-night, four-day non-discounted Magic Your Way package, you'll get three additional nights (including tickets) for free.
The offer is good for stays on most nights January 4-April 4 and April 19-June 27, 2009.
As a bonus, if you travel between January 4 and March 29, 2009 you'll get a $200 Disney Gift Card that you can use to pay some of the costs during your stay. It's also valid at Disneyland, Disney Cruise Line, Disney Store and disneyshopping.com.
Packages start at net prices of $46 per person per day for a family of four in a standard room at a Value Resort from January 4-February 12 (total package price $1,271). For the same Jan. 4-Feb. 12, 2009 dates at a Deluxe the example shows total package price $1,981 (a $848 savings). Those prices are based on families of two adults, one junior and one child, and are based on the non-discounted price of a 7-night/7-day Magic Your Way package.
Packages for other resorts and lengths of stay are also available.
The AP rate info for January '09 (also EXPIRED NOW) was:
Passholder rates for January 1 February 12, 2009 have been released, with value resorts starting at just $49 per night, moderate resorts starting at $89 per night. Select deluxe resorts (Wilderness and Animal Kingdom Lodges) starting at $144 per night and studio accommodations at Saratoga Springs Resort & Spa starting at $179 per night. The rates at value and deluxe resorts are valid January 215 and January 19 February 12. Moderate resorts are available January 417 and January 21 February 12. Saratoga Springs is available January 1 February 12.
*WL Rack rate Jan 1-15 & Jan 19-Feb 12 Std view was $240, Woods $265, Woods Bunk $290, Woods CY $285, CY BB $315.
Hope this helps a little!