Dying Light 2 has been updated to version 1.02 today by Techland. You can find out the complete details for this update from here.
The second update to the game has again added to the file size and brought it from 23 GB to almost 30 GB on PS4. The file size of the game continues to be increased with each subsequent update ahead of the official launch on February 4th. You can read more details on the update below.
Dying Light Update 1.02 Patch Notes
We have already mentioned that the day one patch implements a number of bug fixes and optimizations. This update is also out ahead of the launch of the game and carries the same changelog.