I can't be bothered to read through the amount of previous drivel in this thread, but PL, you do know 1984 came out in 1948, right? The decision to jack the title date up by four years isn't all that mysterious in marketing terms.
Unless... you don't think there's some sort of prescient conspiracy involving Hammer Horror and Bram Stoker that caused the creation of Dracula 1972 AD, do you? I mean, Christopher Neame's dancing in it is pretty damn groovy, so I can see how it could have been used to manipulate certain people. Granted, I'm not sure what the secret world government would do with mind-controlled gay dudes in 1972, but I sure bet it would be /evil/.