I found this online:
Original: Salt escapes from the helicopter after Peabody uncuffs her so that she can kill the rest of the Russian sleepers.
Director's Cut: Salt escapes from the helicopter after Peabody uncuffs her, and an epilogue is added that says the new president was seen placing flowers on his families grave after they died in a plane crash. (Hinting that the new president of the United States is a Russian sleeper.)
Extended: Salt never kills Orlov back in Russia on the Ship. After the showdown between Winter and Salt in the Bunker, Salt is taken to a hospital where Peabody tells her that she is a hero. Salt reveals that there are more moles, and escapes the hospital. She leaves and returns to a monastery where they train children to be moles, and she proceeds to kill Orlov and destroys the monastery.