About the latest Days Gone delay...
It has very little to do with "polish" and more to do with giving the ip it's own launch window. This is confirmed by Sam Witwer at the 34:40 - 35:40 minute mark.
In the bigger scheme of things this might turn out to be a crucial decision if the game resonates.
I mean Sony even mention this themselves
https://blog.us.playstation.com/201...os-release-lineup-the-next-wave-of-ps4-games/We want to share a change in release date for this highly anticipated title from Bend Studio. We recently decided to move the release of Days Gone from the crowded February timeframe to April 26, 2019. While the studio is eager to see Days Gone in the hands of fans, Bend Studio will take the opportunity to further polish Days Gone.