Source: Resumes on an animator's personal website and LinkedIn profile (as spotted by SystemLink) listing animation work for God of War 4 among his previous experience.
What we heard: Even though God of War III wrapped up the series' various storylines, there's little reason to think that Sony would let the lucrative franchise or its homicidal star lie dormant for too long a time. The animator's resumes suggest that dormant period won't be very long at all, as they specify that the worker spent last summer doing freelance work for Motion Logic Studios, with a cinematic test for God of War 4 among the projects he worked on.
The SystemLink story has a screenshot of the animator's LinkedIn page specifying his work on God of War 4, but the actual profile has since been updated to reference instead an "unannounced PS3 game." His personal site has also been updated to remove mention of God of War 4.
Before being altered, the animator's resumes indicated he worked on "game cinematic tests" for God of War 4. Cinematic tests can be done as a sort of proof of concept for games that aren't yet given the green light, but odds are good that the title "God of War 4" was all the proof Sony needed.
The idea that there's more God of War on the way is unsurprising at best. After all, Sony Computer Entertainment America Santa Monica is currently hiring a new programmer to "join the God of War team!" However, that same job listing requests experience with matchmaking, suggesting the next God of War game would introduce online multiplayer to the series for the first time. This animator's resumes only suggest that the game in development is in fact a full-fledged sequel to the series, and not a multiplayer-driven half-step successor along the lines of Assassin's Creed: Brotherhood.
When contacted by GameSpot, the animator in question said he used God of War as inspiration when taking a test for Sony to prove he could animate their characters. He stressed that he did not work on a God of War project, nor is he aware of an existing project."
The Official Story: A Sony representative told GameSpot the company does not comment on rumor or speculation about its products.
Bogus or Not Bogus: Regardless of the animator's resumes, not bogus that more God of War is on the way.