In an interesting turn of events, the Studio Japan title Gravity Rush 2 is getting pushed back to Early 2017 in Japan. This also means that the game will likely release in Western Markets (NA & EU) at a similar date.
The reasoning for this possible delay could be the fact another Studio Japan project The Last Guardian was recently pushed back to December, being very close to the release of Gravity Rush 2. That is not even counting over titles releasing in December that might overshadow it like Kingdom Hearts 2.8 HD.
This is just a RUMOR though, so this could be either true or false. Until we get an official announcement from PlayStation and Sony, take this rumor with a grain of salt.