Venom's character was revealed in "Spider-Man 3" in 2007...well sort of, because everyone has agreed he was thrown in at the last minute to adhere to the studio executives. This explains the horrible adaption of the villain. With his new spin-off film being released, eventually, it seems there won't be any connection between both universes when "Spider-Man 4" is released.
Thanks to MTV news for the audio clip.