Both the PS4 patch and Vita release were submitted to Sony earlier in the month for verification.
Unfortunately, a new crash was discovered that requires fixing. I do not have the details of the crash but Dino and the team believe this is actually something that has probably been in the game a while and missed in previous testing. This issue has now been fixed. As a result of this, the game has had to be re-submitted to Sony, hence the delay.
Current target date for release is end of January/start of February.
Thank you everyone for your patience and support.
Source: Dino Dini’s Twitch Channel http://twitch.tv/dndn1011