With that site up that is counting down to something.

The free DLC that may or may not be coming.

Rumor of Multiplayer "coming for Kratos"

What do you all think is next for the franchise? It's obviously to strong to just kill off.

God of War isn't Spyro, Mark of Kri/Rise of the Kasai, Lair, etc.

God of War's fan base continues to grow with each new game in the series.

So what's next? Ideas.

Well there are only so many greek gods he can kill.  After that the story would have to change quite drastically if it were to continue so I think after any pending DLC or whatnot, Kratos's games are at an end (unless they do prequels/side stories that fit earlier in the timeline).

Well we've been told the Kratos saga ends with III, but the franchise will still be around.

They could move it up in years. Countless wars have taken place since the end of the Greek gods.

There are more Gods for him to kill:P(examples: Artemis,Hestia,Dionysus,Apollo) And many lose ends to the story(like the ending of III and Kratos' brother)...So God of War IV is a big possibility.