There has been no official announcement from Sony or the developer, Sucker Punch, regarding a PC release.
If you have access to a console, inFAMOUS Second Son features: There has been no official announcement from Sony
Infamous Second Son Gameplay Walkthrough Part 13 - The Test (PS4) Game Highlights While progress is being made on
The game is available for purchase on the PlayStation Store for approximately $19.99 . Physical copies are often found for less at retailers like GameStop or eBay . Game Highlights Current Status on PC
While progress is being made on the ShadPS4 emulator, the game is currently only "in-game" (meaning it can boot but is not fully playable) and faces significant performance and graphical issues.
Currently, remains a PlayStation 4 exclusive and does not have an official PC version. Any website offering a "free download" for PC is likely a scam or contains malware, as there is no legitimate way to play the game on Windows without a PS4 or PS5 console. Current Status on PC