Look everyone I know we're all distrusting of leaks after the NX fiasco but this is definitely legit. This is Sony we're talking about. I'm actually surprised if I do NOT see concept art leak from their games.
Probably because Sony/SSM could use God of War to go into different mythologies with different characters and personalities which would freshen up the franchise. Make it feel new. Instead, it will feel like a retread because he can't do anything else with his current mythology because everyone is dead.