Why is Kung Fu Panda coming out on Sunday?

I just saw an advertisement for The Kung Fu Panda DVD coming out on a Sunday. Why are they releasing it then? I know there is no “proper release date” for movies or DVD’s, but it is superstitious to have them come out on Fridays(Movies) and Tuesdays(DVDs). I’m just wondering, ether way I am still getting it when it comes out.
My theory is Disney is continuing to take over the world, and thus, needs to change the release date of DVD’s for the master plan to work out right. (Mickey has AA on Tuesdays and Marriage Consulting on Fridays.)