Gravity Rush 2 was rumored to be delayed to Early 2017 but it is officially confirmed that this title from Studio Japan is being pushed back to early next year. Sony game the following reason for this decision.

Gravity Rush 2 is the conclusion of Kat’s journey, so we want players to have enough time to dive deep into her story. In addition, as a lot of work went into online features that allow for asynchronous player interaction, we want as many people as possible playing the title at the same time. Thus, after careful deliberation, we have decided to change the release date. Gravity Rush 2 will now launch on January 20, 2017.
I would like to apologize to all those players anxiously awaiting Gravity Rush 2. After four years of development making a title we are very proud of, we want to release it at the very best time.
In exchange for the longer wait, we have decided to release the premium DLC planned for the title free of charge. This additional story will take place in the world of Gravity Rush 2 and we think fans will have a lot of fun playing through it.
As we move into the holiday season and the New Year, we have many more exciting things in store, including more information about the title and the special animated feature.

So because of the clustered holiday line up and a desire for more time to work on the games online features, Studio Japan and Sony made the move to push the game to January 20th, 2017. They are offering special story DLC free to make up for this delay, which I feel is a nice gesture on Studio Japan’s part.
This is sad news for those looking forward to this title but we will cover more on this game as further information releases.
Source: PlayStation Blog Post