https://www.polygon.com/2018/12/13/18139142/spider-man-dlc-3-silver-lining-release-date-new-suits

The final chapter in Marvel’s Spider-Man’s The City That Never Sleeps downloadable content will launch on Dec. 21, developer Insomniac Games announced today. Dubbed “Silver Lining” the third DLC drop will focus on Silver Sable and, once again, Hammerhead.

Here’s the official synopsis from Insomniac’s post on the PlayStation Blog: