The original Sarah Connor, the character that kickstarted the entire terminator mythology long before John Connor had taken over the story is set to return to the franchise by performing voice over duties for the fourth film directed by McG and starring Christian "fuck" Bale.
Hamilton says that she will return if the material serves the story properly and would love to reprise her role in the series.
For me this is good news as her presence was sorely missed from part 3 (which i loved).