Well, after rumors and denials, it’s official: The SCI FI Channel has renewed Stargate SG-1 for a seventh season. Series star Richard Dean Anderson will return as Colonel Jack O’Neill as well as his other role as Executive Producer, and production will begin early next year. Update 11/10: And this chat transcript with supervising producer Joseph Mallozzi indicates that Dr. Daniel Jackson (played by Michael Shanks) will return full time…