Director Sam Mendes could return for a further James Bond film following the success of his 007 debut Skyfall.
The Oscar-winner is said to have been working on a plot for a follow-up, according to the regular screenwriters of the series.
Scriptwriters Neal Purvis and Robert Wade, who have worked on five instalments of the series about the secret agent, also revealed they are quitting the franchise.
Speaking during an appearance at the fourth Doha Tribeca Film Festival, Wade said:
Purvis, who has had a screenwriting partnership with Wade for 28 years, added:
Daniel Craig has appeared as James Bond in three films and is contracted for another two.
Skyfall became the UK's biggest box office hit of the year in the space of just 12 days. It is also the most financially successful Bond film, superseding 2006's Casino Royale.