really suprised when first read, but on the other side i can understand sony that they wanted to start with a new ip

https://www.google.it/url?sa=t&source=web&rct=j&url=http://www.pushsquare.com/news/2018/01/sony_didnt_really_want_another_god_of_war_game&ved=0ahUKEwiVkd3qhsnYAhWJ0xQKHeOnC7QQFggkMAA&usg=AOvVaw177Et73p-JJ2SUvRtjgl2e

Sony wanted to give God of War a much longer rest after previous entry Ascensiondisappointed critically and commercially. The latest issue of Game Informer reveals that the company needed serious convincing in order to give the franchise another shot. “A lot of people throughout the organisation wanted [God of War] to sleep and rest,” Sony Santa Monica boss Shannon Studstill told the magazine.

It was down to God of War II director Cory Barlog to come up with a pitch that could revitalise interest in the franchise, among both fans and the publisher itself. “Even the first pitches I gave, there was that, ‘You've really got to convince me that we should do another one,’” he explained, referring to the internal temperature for the franchise at the time.

I'm glad cause I was with Sony on this. But seeing how different this game is I'm happy and excited.

In all honesty, I really like the way Sony doesn't live or die based on a few enormous IP and that they're willing to step away from something if the idea or timing isn't right.

Wasn't Ascension launching just before the PS4 popped in? I feel that is a 'things may not sell that well' scenario that most would accept

I agree, too. I was ready for Kratos to end. Feel the same way about Master Chief. 

Maybe the new one will surprise me, but fatigue of the character is the main reason I'm not too excited for the game.

I'd still rather have a different game than God Of War 4. I just can't imagine the gameplay being fun, but I could be wrong. Plus it fits a bit too similarly with the whole cinematic approach Sony has done.

I don't think that's the motivation. I think it's a case of most of their IP not having legs enough to span 30 years. 

Yes, and there's a reason for that. GT will probably be the first game to achieve such a goal. Albeit, with declining returns. I can't think of another Sony-owned IP that's been popular since the PS1 days. Are there any?

GT is only one.  But they are ruining that one to so who knows how long it has left.