The question for Fast 7 now is how to proceed after losing it’s second lead 50% through filming. The man responsible for screenplay duties (Chris Morgan) has been recalled and is retooling the script right now. Morgan will write an appropriate exit for Paul Walker by taking into consideration footage and scenes already used and shot. This type of thing has been done before, to a lesser extent, with Oliver Reed who died while shooting Gladiator. CGI and out-takes were used for his exit.
Anyway, if Morgan can deliver a new draft, shooting could resume in late January. The death of Walker is also said to present the largest insurance payout in Hollywood history. Elsewhere, Vin Diesel has spoken of his grief at losing real life long- term best buddy.