According to WDWmagic, most of the Deluxe and DVC resorts on property will begin providing free, in-room WiFi access starting today. There is some speculation that this has to do with the upcoming implementation of the "NextGen" technology, which will likely require frequent internet access when planning a WDW vacation.
The complete list of resorts receiving WiFi is below:
Disney’s Animal Kingdom Lodge
Disney’s Beach Club Resort
Disney’s BoardWalk Resort
Disney’s Contemporary Resort
Disney’s Coronado Springs Resort
Disney’s Grand Floridian Resort & Spa
Disney’s Old Key West Resort
Disney’s Polynesian Resort
Disney’s Saratoga Springs Resort & Spa
Disney’s Wilderness Lodge Resort
Disney’s Yacht Club Resort
About time... maybe some good will come from NextGen after all.