Producer James Middleton talked to IGN about Terminator 4. Here’s the clip:
Middleton told IGN that "T4" is happening at The Halcyon Company and will be written by Michael Ferris and John D. Brancato, the duo that wrote Terminator 3: Rise of the Machines. No director is set yet. Halcyon would like to be in pre-production in October for a 2009 release.
The fourth film, which will be titled "Terminator" with a subtitle much like "Rise of the Machines," will follow the events of "T3" and be post-apocalyptic. While it's not known whether Nick Stahl and Claire Danes will return, John Connor and Kate Brewster are indeed in the script.
The movie will feature a new hero. Middleton said the new hero would be like how "Ben-Hur was influenced by Jesus Christ, but it was his story. Much in that way, this character will be influenced by John Connor."