This is very strange.
A blog post back in July of this year covered it first: Disney comics going mobile with Disney DigiComics
Today, Bloomberg came out with this: Disney to Sell Digital Comics on IPhone, Other Devices
Dec. 15 (Bloomberg) — Walt Disney Co., the world’s largest media company, will start selling comics to users of Apple Inc.’s iPhone and other devices tomorrow to take advantage of increased demand for digital content.
The original timeframe was a September release, so perhaps it took longer than they expected to launch?