There has been an apparent leak regarding God Of War 4, which suggests that the next main entry to the series will take players into Norse mythology. Kratos looks set to return and will apparently be sporting a beard. According to NerdLeaks Kratos will be in Alfheim, one of the worlds present in the Norse myths, where the Light Elves dwell. He’ll also apparently have an axe to use, which will help in cutting down the local flora. There’s no mention of his blades.
NerdLeaks has a gallery of supposed concept art from the game, including one showing Kratos with beard. However, that image doesn’t look too convincing and the other art could have been taken from any game in production. We know Sony Santa Monica are working on a new title in the God Of War series, but there’s been no information about it’s setting or protagonist. This leak may be legit with the source claimed to be a concept artist who worked at the studio, with images taken from a private section of their site.
If this is God Of War IV then Norse mythology is an interesting place to go. However the legitimacy of these images is hard to ascertain, so without solid evidence I’m not convinced enough to say that this is definitely evidence of what to expect in the next God Of War.
UPDATE: Nerdleaks seem to have shut the entire site overnight, but the images can now be found here. Two years ago Sony Santa Monica shut down a huge project that included a number of key staff from the God of War franchise, this concept art may be from that old, cancelled game.