After some dreadful preseason performances, the Patriots waived Kevin O'Connell. He was 12 for 26, with 2 INTs, and an abysmal 25.8 QB rating. Against Washington, he was 3/10 for 18 yards and threw 2 picks.
So it looks like Andrew Walter is the #2, with Brian Hoyer at #3. Although I wouldn't be shocked if the Pats signed a veteran.