Sorry for not responded early am on vacation and don't normally go to this site unless I am at work,
Konami has done this on the ios sense they started putting pes games on the phone right before the new one launches they pull the old one, ea does it with all there sports titles as.
I remember reading a article about it for ios and they said where they pull the old sports titles off shelves for console games so nobody accidently buys the last year version instead of the new one same goes for the mobile market they want people to only get the newest version,
So I expect with madden and tiger woods coming out we will see this happen to ea sports line up and if 2k puts theres on the wp marketplace as well