We don't know anything about the conditions of Toshiba's deal with Paramount, but there's probably a way to get out of it if Paramount decides it really was a mistake.
http://www.nytimes.com/2007/08/21/t...rss&adxnnlx=1187698143-B5wO3L/F+4r1NyAsum87vQ
The two studios may have left themselves wiggle room, however. Paramount’s agreement to use only HD DVD is limited to only 18 months. And Paramount noted that no films directed by Steven Spielberg were included in the deal “as his films are not exclusive to either format.” Mr. Spielberg is a co-founder of DreamWorks SKG, a unit of Paramount.
And Chicken Little is on Blu Ray, for what it's worth.