Amazon has steathily, almost creepily, changed the release date for Silent Hill: Book of Memories from what was supposed to be late this month to October 13, 2012. This is already on top of Konami delaying the Vita title to May from March pretty much without telling anyone.
Meanwhile, GameStop has yet to change the May 22, 2012 release date and GameFly is "TBD" on the issue, which doesn't bode well for the title. Hopefully, Konami will have a more official statement on these discrepancies in the near future.
[Source]